Question

Resolva:
2x+100=6x
3x+20=5x-20

Answer 1

2x+100=6x
2x-6x=-100
-4x=-100 (-1)
4x=100
x=100/4
x=25 
Resposta: 25

3x+20=5x-20
3x-5x=-20-20
-2x=-40 (-1)
2x=40
x=40/2
x=20
Resposta: 20

Answer 2

equações

2x+100=6x
2x-6x=-100
-4x=-100 *(-1)
x=100/4
x=25


3x+20=5x-20
3x-5x=-20-20
-2x=-40 *(-1)
2x=40
x=40/2
x=20