Question

Como resolver esta 13x-23-45=-7x+12

Answer 1

13x - 23 - 45 = -7x + 12
13x + 7x = 12 + 23 + 45
20x = 35 + 45 
x = 80/20
x = 4

Answer 2

13x - 23 - 45 = -7x + 12
13x + 7x = 12 + 23 + 45
20x = 80
x = $\frac{80}{20}$
x = 4

Espero ter ajudado :D