Question

alguém sabe responder a letra c ?

Answer 1

$\frac{1}{2}(10x-6)=x+16$

$\frac{10x}{2}- \frac{6}{2}=x+16$

$5x - 3 = x +16$

$5x-x=16+3$

$4x=19-->x= \frac{19}{4}$