Question

Resolva em R
3x+1=6x-3

2(5x-4)=12

3-x=5+5x

Answer 1

3x+1=6x-3
3x-6x=-3-1
-3x=-4.(-1)
3x=4
x=4/3

2(5x-4)=12
10x-8=12
10x=12+8
10x=20
x=20/10
x=2

3-x=5+5x
-x-5x=5-3
-6x=2.(-1)
6x=-2
x=-2/6=-1/3