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0.2分之0.5x%0.3分之0.1x+2等于%1

0.2分之x-2-0.5分之x+1=3 0.5x-0.02-0.2x+0.01=0.03 0.3x-0.01=0.03 0.3x=0.04 x=2/15

(0.1x+0.3)/0.2 + 2 = (0.4x-1)/0.5 (x+3)/2 + 2 = (4x-10)/5 5(x+3) + 20 = 2(4x-10) 5x+15 + 20 = 8x-20 5x+35 = 8x-20 5x-8x = -20-35 -3x = -55 x = 55/3

1/3+x/2=1/2 通分,方程两边同乘6 2+3x=3 3x=1 x=1/3

(0.1x-0.2)/0.02-(x+1)/0.5=3 (x-2)/0.2-(x+1)/0.5=3 5(x-2)-2(x+1)=3 3x=15 x=5

通分 最小公倍数为0.15 ,通分得: 0.5(x-1)-0.3(x+2)=0.18, 0.2x-1.1=0.18 ,0.2x=0.18+1.1 ,0.2x=1.28 ,x=6.4 够仔细了吧 楼主加分啊 [

(10+5x)/3-(2x-5)/15=1/5

原式可化为 8X-1.5-25X-0.8=12-X+3 8X-25X+X=1.5-0.8+3 -16X=3.7 X=-3.7/16 我怎么感觉题目是不是有问题啊

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