Question

Respuesta y procedimiento completo
0.7x – 7 = 0.3x – 5

Answer 1

$0.7x - 7 = 0.3x - 5 \\ 0.7x - 0.3x = - 5 + 7 \\ 0.4x = 2 \\ \frac{4x}{10} = 2 \\ 4x = 2 \times 10 \\ 4x = 20 \\ x = \frac{20}{4} \\ x = 5$