Question

resolvam para mim até a letra g?

Answer 1

a) $3(x + 3) - 1 = 2$
$3(x + 3) = 3$
$3x + 9 = 3$
$3x = -6$
$x = \frac{-6}{2}$
$x = -3$
b)$3(x + 3) = 2(x - 7)$
$3x + 9 = 2x - 14$
$3x = 2x - 23$
$x = -23$
c)$3(x + 2) - 1 = 2(x + 3) - 7$
$3x + 6 - 1 = 2x + 6 - 7$
$3x - 1 = 2x - 7$
$3x = 2x - 6$
$x = -6$
d)$3(x + 1) + 2 = 5 + 2(x - 1)$
$3x + 3 + 2 = 5 + 2x - 2$
$3x + 5 = 2x + 3$
$3x = 2x - 2$
$x = -2$
e)$5(2x + 7) - 1 = 4(x - 5) + 9$
$10x + 35 - 1 = 4x - 20 + 9$
$10x + 34 = 4x - 11$
$6x = -45$
$x = -\frac{45}{6}$
$x = -\frac{15}{2}$
f)$2(x + 1) + 5(x - 1) = 7$
$2x + 2 + 5x - 5 = 7$
$7x - 3 = 7$
$7x = 10$
$x = \frac{10}{7}$ 
g)$2(x - 1) + 3(x + 1) = 4(x + 2)$
$2x - 2 + 3x + 3 = 4x + 8$
$5x - 1 = 4x + 8$
$5x = 4x + 9$
$x = 9$

Feito!