Question

Genteeeee me ajudaaaaaa pelo amor de Deus qual as respostas

Answer 1

a)$\frac{x}{7} = \frac{8}{4 } = 4x = 56 = x = 14$

b)$\frac{5}{14} = \frac{x}{28} = 14x = 140 = x = 10$

c)$7x + 4 = 2x - 5 = 5x = - 9 = x = \frac{-9}{5}$

d)15 + 3x = 45 - x = 4x = 20 = x = 5