Question

resolva essas pra min pf com contas urgente

A) x sobre 3 + 4x = _________

B) x + x sobre 2 = __________

C) x sobre 4 - 1 =_____________

Answer 1

Explicação passo-a-passo:

a)

$\frac{x}{3} + 4x = \\ \frac{x}{3} + \frac{4x}{1} = \\ \frac{x}{3} + \frac{4x \times 3}{1 \times 3} = \\ \frac{x}{3} + \frac{12x}{3} = \\ \frac{x + 12x}{3} = \\ \frac{13x}{3}$

b)

$x + \frac{x}{2} = \\ \frac{x}{1} + \frac{x}{2} = \\ \frac{x \times 2}{1 \times 2} + \frac{x}{2} = \\ \frac{2x + x}{2} = \\ \frac{3x}{2}$

c)

$\frac{x}{4 - 1} = \\ \frac{x}{3}$