Question

Resolva
A)5x+4-3x=x+13
B)3x-4=2x-11

Answer 1

A) 5x +4 -3x= x +13
5x-3x-x= 13-4
5x-4x= 9
x=9

B) 3x - 4 = 2x -11
3x-2x = -11+4
x= -7
Espero ter ajudado, e que esteja correto ;)

Answer 2

A)
5x + 4 - 3x = x + 13
5x - 3x + 4 = x + 13
2x + 4 = x  + 13
2x - x = 13 - 4
x = 9

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B)
3x - 4 = 2x - 11
3x - 2x = - 11 + 4
x = - 7