Question

Qual o valor de b ?? Help

(2/4) + (3/b) = 1

Answer 1

$\frac{2}{4} + \frac{3}{b} = \frac{1}{1} \\ \\ MMC (4; b) = 4b\\ \\ \frac{2 * b + 3 * 4}{4b} = \frac{4b}{4b} \\ \\ Agora basta eliminar os denominadores\\ \\ 2b + 12 = 4b\\ \\ 4b - 2b = 12\\ \\ 2b = 12\\ \\ b = \frac{12}{2} \\ \\ <strong>b = 6</strong>$