Question

(FMG-SP)Em 4/3+x + 2/6+2x=5/2,o valor de x é: a)1 b)0,1 c)-1 d)-3

Answer 1

4/3+x + 2/6+2x=5/2
$\frac{4}{3}+ \frac{2}{6}+3x= \frac{5}{2} \\\\ \frac{18x+2+8}{6} = \frac{5}{2} \\\\ \frac{18x+10}{6} = \frac{5}{2}\\\\ (18x+10)2=(5)6\\\\ 36x+20=30\\\\ 36x=30-20\\\\ 36x=10\\\\ x= \frac{10}{36}\\\\ x= \frac{5}{18}$