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解比例计算题 解比例计算题?

日期:2023-4-80 次浏览

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解比例计算题还要答案

1.解比例.(1)20:30=10:X 20X=30*10 20X=300X=15(2)18:45=X:545X =18*545X =90X =2(3)7.5:15=X/10(这里注意是分数形式)15X =7.5*1015X =75X =5解比例要点:1.要写“解”字;2.等号要对齐;3.依据比例的基本性质,要内项的积=外项的积,不能搞混了.2.判断.(1)1/3:2.4=2.4:X,X=1.3.(X)(2)1/3=X/21,这不是比例.(X)要点:分数形式的也是比例,不能跟(2)题一样.本回答被提问者和网友采纳

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计算题。

首先算房间的面积,一块边长3分米地钻的面积是 3 x 3 = 9 dm²铺满要用160块边长3分米的地砖, 所以房间面积是 9 x 160 = 1440 dm²一块边长4分米的地钻面积是 4 x 4 = 16 dm²需要的数量是 1440 ÷ 16 = 90 块。

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解比例计算题500道

(x-2)-3(4x-1)=9(1-x) 11x+64-2x=100-9x15-(8-5x)=7x+(4-3x) 7(2x-1)-3(4x-1)=4(3x+2)-1; (5y+1)+ (1-y)= (9y+1)+ (1-3y); 20%+(1-20%)(320-x)=320×40% 2(x-2)+2=x+1 2(x-2)-3(4x-1)=9(1-x) x/3 -5 = (5-x)/2 2(x+1) /3=5(x+1) /6 -1 (1/5)x +1 =(2x+1)/4 (5-2)/2 - (4+x)/3 =1 x/3 -1 = (1-x)/2 (x-2)/2 - (3x-2)/4 =-1 11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x) 3(x-7)-2[9-4(2-x)]=22 3/2[2/3(1/4x-1)-2]-x=2 2(x-2)-3(4x-1)=9(1-x) 11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x) 3(x-7)-2[9-4(2-x)]=22 3/2[2/3(1/4x-1)-2]-x=2 2(x-2)+2=x+1 1.7(2x-1)-3(4x-1)=4(3x+2)-12.(5y+1)+ (1-y)= (9y+1)+ (1-3y)3.[ (- 2)-4 ]=x+24.20%+(1-20%)(320-x)=320×40%5.2(x-2)+2=x+1 6.2(x-2)-3(4x-1)=9(1-x) 7.11x+64-2x=100-9x 8.15-(8-5x)=7x+(4-3x) 9.3(x-7)-2[9-4(2-x)]=22 10.3/2[2/3(1/4x-1)-2]-x=211.5x+1-2x=3x-212.3y-4=2y+113.87X*13=514.7Z/93=41 15.15X+863-65X=54 16.58Y*55=2748917.2(x+2)+4=918.2(x+4)=1019.3(x-5)=1820.4x+8=2(x-1)21.3(x+3)=9+x22.6(x/2+1)=1223.9(x+6)=6324.2+x=2(x-1/2)25.8x+3(1-x)=-226.7+x-2(x-1)=127.x/3 -5 = (5-x)/2 28.2(x+1) /3=5(x+1) /6 -1 .(1/5)x +1 =(2x+1)/4 (5-2)/2 - (4+x)/3 =1 15x-8(5x+1.5)=18*1.25+x 3X+189=521 4Y+119=22 3X*189=5 8Z/6=458 3X+77=59 3(x-7)-2[9-4(2-x)]=22 3/2[2/3(1/4x-1)-2]-x=2 4Y-6985=81 87X*13=5 7Z/93=41 15X+863-65X=54 58Y*55=27489. 2(x-2)-3(4x-1)=9(1-x). 11x+64-2x=100-9x. 15-(8-5x)=7x+(4-3x). 3(x-7)-2[9-4(2-x)]=22. 3/2[2/3(1/4x-1)-2]-x=2. 2(x-2)+2=x+1. 0.4(x-0.2)+1.5=0.7x-0.38. 30x-10(10-x)=100. 4(x+2)=5(x-2). 120-4(x+5)=25. 15x+863-65x=54. 12.3(x-2)+1=x-(2x-1). 11x+64-2x=100-9x. 14.59+x-25.31=0. x-48.32+78.51=80. 820-16x=45.5×8. (x-6)×7=2x. 3x+x=18. 0.8+3.2=7.2. 12.5-3x=6.5. 1.2(x-0.64)=0.54. x+12.5=3.5x. 8x-22.8=1.2. 1/50x+10=60. 2/ 60x-30=20. 3/ 3^20x+50=110. 4/ 2x=5x-3. 5/ 90=10+x. 6/ 90+20x=30. 7\ 691+3x=700 3X+5X=48 14X-8X=12 6*5+2X=44 20X-50=50 28+6X=88 32-22X=10 24-3X=3 10X*(5+1)=60 99X=100-X X+3=18 X-6=12 56-2X=20 4y+2=6 x+32=76 3x+6=18 16+8x=40 2x-8=8 4x-3*9=29 8x-3x=105 x-6*5=42 x+5=7 2x+3=10 12x-9x=9 6x+18=48 56x-50x=30 5x=15 78-5x=28 32y-29=3 5x+5=15 89x-9=80 100-20x=20 55x-25x=60 76y-75=1 23y-23=23 4x-20=0 80y+20=100 53x-90=16 2x+9x=11 12y-12=24 80+5x=100 7x-8=6 65x+35=100 19y+y=40 25-5x=15 79y+y=80 42x+28x=140 3x-1=8 90y-90=90 80y-90=70 78y+2y=160 88-x=80 9-4x=1 20x=40 65y-30=100 3x(-9)+7x(-9) (-54)x1/6x(-1/3)x/3 -5 = (5-x)/2 2(x+1) /3=5(x+1) /6 -1 (1/5)x 1 =(2x+1)/4 (5-2)/2 - (4+x)/3 =1 x/3 -1 = (1-x)/2 (x-2)/2 - (3x-2)/4 =-1 (5y+1)+(1-y)=(9y+1)+(1-3y) 7(2x-1)-3(4x-1)=4(3x+2)-110x=11 x=-1.1 2x+5=45 2(x+8)=48 88-25x=45+6x 3x(-9)+7x(-9) (-54)x1/6x(-1/3)x/3 -5 = (5-x)/2 2(x+1) /3=5(x+1) /6 -1(1/5)x +1 =(2x+1)/4 (5-2)/2 - (4+x)/3 =1 x/3 -1 = (1-x)/2 (x-2)/2 - (3x-2)/4 =-1 (5y+1)+(1-y)=(9y+1)+(1-3y) 7(2x-1)-3(4x-1)=4(3x+2)-1 10x=11 x=-1.1 2x+5=45 2(x+8)=48 88-25x=45+6x 566+48x=56-x 2(x-2)-3(4x-1)=9(1-x) 11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x) 3(x-7)-2[9-4(2-x)]=22 3x^2+27=0 3x^2-4x-4=0. (2y+1)^2+3(2y+1)+2=0. (x-2)^2-3=0 2x^2-5x+1=0 x(8+x)=16 (2x-3)^2-2(2x-3)-3=0 x^2-17x+66=0 (x+1)^2-2(x-1)^2=6x-5 4 (x+2)^2=9(2x-1)^23/5:x=1/3:2 x=3.6 3:8=15:x x=40 x:9=4:3 x=12 1/4:1/8=x:1/10 x=1/5 1.25:0.25=x:1.6 x=8 3/4:x=3:12 x=3 5:8=40:x x=64 x:3/4=1/5:2/5 x=3/8 140:2=x:5 x=350 6.5:x=3.25:4 x=8本回答被网友采纳

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解比例计算题怎么做?

比例方程最基本的解法是交叉相乘积相等,也就是说a:b=c:d,有ad=bc

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解比例计算题?

我来写几个给你看看。1/4=x/53/4=5/x9/4=2/x本回答被网友采纳

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