Question

quisiera saber si a/3 = b/4 ^ a×b = 108/ hallar el valor de “a” , xfis

Answer 1

Hola!!☺☺

Lo que haremos será

$\frac{a}{3} = \frac{b}{4} \\ \\ \frac{a}{b} = \frac{3}{4} \\ \\ a = 3k \\ b = 4k$

Reemplazamos "a" y "b"

$(3k)(4k) = 108 \\ \\ 12 {k}^{2} = 108 \\ \\ {k}^{2} = 9 \\ \\ k = 3$

Entonces "a" es

$a = 3k = 3(3) = 9$