Question

Qual a solução da equação 20x - 13 = 20 + 9x ???​

Answer 1

Resposta:

$20x - 13 = 20 + 9x \\\\20x-13=20+9x\\\\20x-13+13=20+9x+13\\\\20x=9x+33\\\\20x-9x=9x+33-9x\\\\11x=33\\\\\frac{11x}{11}=\frac{33}{11}\\\\x=3$

Answer 2

Resposta:

x=3

Explicação passo-a-passo:

20x-13=20+9x

20x-9x=20+13

11x=33

x=3