Question

O valor de X na seguinte expressão: (2/3).X – 2/(3²) + 4³ . 1/(2²) = 1/3, é:
A) 3
B) -61/3
C) 13/6
D) -139/6
E) 88/3

Answer 1

Oi :) 

$\frac{2}{3} x- \frac{2}{3^2}+4^3* \frac{1}{2^2}= \frac{1}{3} \\ \\ \frac{2}{3} x- \frac{2}{9}+ \frac{64}{4}= \frac{1}{3} \\ \\ \frac{2}{3} x- \frac{2}{9}+ 16= \frac{1}{3} \\ \\ \frac{6x-2+144=3}{9} \\ \\6x-2+144=3 \\ 6x=3-142 \\ 6x=-139 \\ x=-139/6$