Question

Resuelve cada ecuación.
a. 7x - 15 20
b.-5x - 8 = 12
c. 4x - 10 = 26
d.-6x + 18 = 10​

Answer 1

a.

$7x - 15 = 20 \\ 7x = 20 + 15 \\ 7x = 35 \\ x = 5$

b.

$- 5 x - 8 = 12 \\ - 5x = 12 + 8 \\ - 5x = 20 \\ x = - 4$

c.

$4x - 10 = 26 \\ 4x = 26 + 10 \\ 4x = 36 \\ x = 9$

d.

$- 6x + 18 = 10 \\ - 6x = 10 - 18 \\ - 6x = - 8 \\ x \frac{4}{3}$