Question

2x - 1 = 1/3
a) 2/3
b) -1/2
c) 3
d) -4/5
e) 1/3

Answer 1

Explicação passo-a-passo:

$\sf 2x-1=\dfrac{1}{3}$

$\sf 3\cdot(2x-1)=1$

$\sf 6x-3=1$

$\sf 6x=1+3$

$\sf 6x=4$

$\sf x=\dfrac{4}{6}$

$\sf \red{x=\dfrac{2}{3}}$

Letra A

Answer 2

Resposta:

Letra A: 2/3

Explicação passo-a-passo:

$2x-1= \frac{1}{3} \\2x=\frac{1}{3} + 1\\2x=\frac{1+3}{3}\\2x=\frac{4}{3}\\x=\frac{4}{6}\\\\x=\frac{2}{3}$