解方程. 1.4x-1.6×5=1.8 2x-5/2=1/4 x-1/5x=3/10 2.5:x=7.5:12 x/45=5.829.
问题描述:
解方程.
1.4x-1.6×5=1.8
2x-
=5 2
1 4
x-
x=1 5
3 10
2.5:x=7.5:12
=x 45
. 5.8 29
答
(1)1.4x-1.6×5=1.8 1.4x-8=1.8 1.4x-8+8=1.8+8 &nbs...