Question

Решите уравнения: 
а) 3х+1,8= 3-х 
б) 57х-314х=-2 

Answer 1

3x+1,8=3x-x
1,8=3x-x-3x
x=-1,8

Answer 2

3х+1,8=3-х
3х+х=3-1.8
4х=1,2
х=1,2:4
х=0,3
======================
5/7х-3/14х=-2
1/2х=-2
х=-2:1/2
х=- 4