1.2*75%-X=50%x怎吗算
问题描述:
1.2*75%-X=50%x怎吗算
答
0.9=1.5X,X=0.6
答
75%=3/4
50%=1/2
1.2×(3/4)-x=(1/2)x
把等号左边的x移到等号右边,变成:1.2×(3/4)=(1/2)x+x
即(1/2)x+x=1.2×(3/4)
(3/2)x=0.9
x=0.9×(2/3)
x=0.6
答
1.5-x=0.5x
0.5x=1.5
x=3
答
0.9-x=0.5x
1.5x=0.9
x=3/5
答
1.2×75%-x=50%x
6/5×3/4-x=1/2 x
x+1/2 x=9/10
3/2 x=9/10
x=3/5