(9×4×0.8-x)÷(9×4)=x÷(6×0.8)怎么解
问题描述:
(9×4×0.8-x)÷(9×4)=x÷(6×0.8)怎么解
答
9×4×0.8-x)÷(9×4)=x÷(6×0.8)
(28.8-x)÷36=x÷4.8
28.8/36-x/36=x/4.8
x/4.8+x/36=28.8/36
x(1/4.8+1/36)=0.8
x(17/72)=0.8
x=288/85