Question

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

Answer 1

$\frac{3a+6}{8} = \frac{2a+10}{6} \\\\ 3a+6=\frac{(2a+10)*8}{6} \\\\ 3a+6=\frac{(2a+10)*4}{3}\\\\ (3a+6)*3=(2a+10)*4\\\\ 9a+18=8a+40\\\\ a=40-18\\\\ \boxed{a=22}$