(1)4x-1.2=10.8-4x (2)1.2x+8.5=5x-1 (3)1.8-2.4x=8x-0.72速喥

问题描述:

(1)4x-1.2=10.8-4x (2)1.2x+8.5=5x-1 (3)1.8-2.4x=8x-0.72速喥

(1)4x-1.2=10.8-4x
4x+4x=10.8+1.2
8x=12
x=12÷8
x=3/2
(2)1.2x+8. 5=5x-1
5x-1.2x=0.5+1
3.8x=1.5
x=1.5÷3.8
x=15/38
(3)1.8-2.4x=8x-0.72
8x+2.4x=1.8+0.72
10.4x=2.52
x=2.52÷10.4
x=63/260