Question

Determine um número real para as expressões (3a+6)/8e(2a+10)/6 sejam iguais

Answer 1

$\frac{3a+6}{8}= \frac{2a+10}{6}\\ \\ 18a+36=16a+80\\ \\ 18a-16a=80-36\\ \\ 2a= 44\\ \\ \boxed{a=22}$

Answer 2

(3a+6)/8=(2a+10)/6
(3a+6)*6=(2a+10)*8
18a+36=16a+80
18a-16a=80-36
2a=44
a=22