Question

ayuda se entrega hoy

Answer 1

Respuesta:

$7(x - 2) = 14 + 3x \\ 7x - 14 = 14 + 3x \\ 7x - 3x = 14 + 14 \\ 4x = 28 \\ x = 7$

$5(2x + 3) + 4 = 39 \\ 10x + 15 + 4 = 39 \\ 10x + 19 = 39 \\ 10x = 39 - 19 \\ 10x = 20 \\ x = 2$

$20 + 4(x - 2) = x + 21 \\ 20 + 4x - 8 = x + 21 \\ 4x + 12 = x + 21 \\ 4x - x = 21 - 12 \\ 3x = 9 \\ x = 3$