Question

Calcule o valor de x na equação 7(x − 5) = 5(x + 8) − 10 .

Answer 1

$\boxed{ \begin{array}{lr}\Large\sf 7(x - 5) = 5(x + 8) - 10 \\ \\ \Large\sf 7x - 35 = 5x + 40 - 10 \\ \\ \Large\sf 7x - 5x = 40 - 10 + 35 \\ \\ \Large\sf 2x = 30 + 35 \\ \\\Large\sf 2x = 65 \\ \\ \Large\sf x = \dfrac{65}{2} \end{array}}$

Answer 2

Resposta:

Explicação passo a passo:

7(x-5) = 5(x+8)-10

7x-35=5x+40-10

7x-5x=30+35

2x=65

x=65/2

x=32,5