x-1/5=8 (x+0.9)=5(x-1.x-1/5=8 (x+0.9)=5(x-1.

问题描述:

x-1/5=8 (x+0.9)=5(x-1.
x-1/5=8 (x+0.9)=5(x-1.

x-1/5=8 x+0.9=5x-107*5
x=8又1/5 x-5x=-107*5-0.9
-4x=-535.9
x=133.975

该怎么算就怎么算

1:x=8+1/5
x=41/5
2:x+0.9=5x-8.5
x-5x=-8.5-0.9
-4x=-7.6
x=-7.6/(-4)
x=1.9

什么数学题?

x-1/5=8
x=8+1/5
x=8.2
(x+0.9)=5(x-1.7)
x+0.9=5x-8.5
x-5x=-8.5-0.9
-4x=-9.4
x=23.5

(x+0.9)=5(x-1.7) x+0.9=5x-8.5 x-5x=-8.5-0.9 -4x=-9.4 x=23.5 去括号,解方程吧 x+0.9=5x-8.5 x-5x=-0.9-