Question

Resolver las siguientes ecuaciones:
a) -5x = 12 - x
b) 2(x-7)-3(x+2)+4(x+1)-2 = 0
c) 3x - 5 = x/2
d) 3x + 4 - x = 7 + 2x
e) 2x - 1 = 3(x + 2) - x

Answer 1

Respuesta:

$a) - 5x = 12 - x \\ - 12 = - x + 5x \\ - 12 = 4x \\ -3 = x$

$b)2(x - 7) - 3(x + 2) + 4(x + 1) - 2 = 0 \\ 2x - 14 - 3x - 6 + 4x + 4 - 2 = 0 \\ 3x - 18 = 0 \\ 3x = 18 \\ x = 6$

$c)3x - 5 = \frac{x}{2} \\ 2(3x - 5) = 2 \times \frac{x}{2} \\ 6x - 10 = x \\ 6x - x = 10 \\ 5x = 10 \\ x = 2$