Question

me podrían ayudar, con esto? son 4 problemas.

Answer 1

a)
$2x - 5 = 9 \\ 2x = 9 + 5 \\ 2x = 14 \\ x = 7$
b)
$3x - x = 14 \\ 2x = 14 \\ x = \frac{14}{2} \\ x = 7$
c)
$x - \frac{x}{2} = 40 \\ \frac{x}{2} = 40 \\ x = 40 \times 2 \\ x = 80$
d)
$3x + 2 = 32 \\ 3x = 30 \\ x = 10$