Question

Preciso de Ajuda

3.(1+x)-x=7

Answer 1

3+3x-x=7
2x=7-3
2x=4
x= 4
    --- = 2
     2

Answer 2

3.(1+x)-x = 7

3+3x - x =7

3 + 2x =7

2x = 7-3

2x =4 

x= 4/2

x=2