Question

Me ayudan con estas ecuaciones

Answer 1

PREGUNTA 1

$2(x + 8) = 40 - x \\ 2x + 16 = 40 - x \\ 2x + x = 40 - 16 \\ 3x = 24 \\ x = \frac{24}{8} \\ x = 3$

PREGUNTA 2

$3(2x - 5) = 45 + 4x \\ 6x - 15 = 45 + 4x \\ 6x - 4x = 45 + 15 \\ 2x = 60 \\ x = \frac{60}{2} \\ x = 30$

PREGUNTA 3

$3(8x - 2) = 4(5x + 6) \\ 24x - 6 = 20x + 24 \\ 24x - 20x = 24 + 6 \\ 4x = 30 \\ x = \frac{30}{4} \\ x = 7.5$

PREGUNTA 4

$2(3x - 7) = 4x - 6 \\ 6x - 14 = 4x - 6 \\ 6x - 4x =14 - 6 \\ 2x = 8 \\ x = \frac{8}{2} \\ x = 4$

PREGUNTA 5

$4(x - 2) = 12 - x \\ 4x - 8 = 12 - x \\ 4x + x = 12 + 8 \\ 5x = 20 \\ x = \frac{20}{5} \\ x = 4$