Question

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

Answer 1

$\sf 13x - 23 - 45 = - 7x + 12$

$\sf 13x + 7x = 12 + 45 + 23$

$\sf 20x = 80$

$\sf x = \dfrac{80}{20}$

$\red{\sf x = 4}$