Question

Qual a resposta da equação 13x-23-45=-7x+12?

Answer 1

13x - 23 - 45 = - 7x + 12
13x - 68 = - 7x + 12
13x + 7x = 12 + 68
20x = 80
x = 80/20
x = 8/2
x = 4 

Resposta: x = 4 

Answer 2

13x+7x=23+45+12

20x=80
x= 80/20

x=4