Question

resolve y verifica
- 2x + 6x – 8 = -36 : 4 + 8x - 7

Answer 1

Respuesta:

$- 2x + 6x - 8 = - 36 \div 4 + 8x - 7 \\ - 2x + 6x - 8 = - 9 + 8x - 7 \\ 4x - 8 = - 16 + 8x \\ - 8 + 16 = 8x - 4x \\ 8 = 4x \\ \frac{8}{4} = x \\ x = 2$

Comprobación

$- 2x + 6x - 8 = - 36 \div 4 + 8x - 7 \\ - 2(2) + 6(2) - 8 = - 36 \div 4 + 8(2) - 7 \\ - 4 + 12 - 8 = - 9 + 16 - 7 \\ 8 - 8 = 7 - 7 \\ 0 = 0 \\ verdadero$