Question

− 4 = three fourths(x + 8)

Answer 1

Start with

$-4 = \dfrac{3}{4}(x+8)$

Multiply both sides by 4:

$-16 = 3(x+8)$

Divide both sides by 3:

$-\dfrac{16}{3} = x+8$

Subtract 8 from both sides:

$x = -\dfrac{16}{3}-8 = -\dfrac{16}{3}-\dfrac{24}{3} = -\dfrac{40}{3}$