Question

The solution of align="absmiddle" class="latex-formula">x + 2 = 7x is
A. 1
B. 3/10
C. 1/2
D. 1/10

Answer 1

Answer:

B)

Step-by-step explanation:

$\frac{1}{3}x+2=7x$

Subtract (1/3)x form both sides

$\frac{1}{3}x+2-\frac{1}{3}x=7x-\frac{1}{3}x\\\\2=7x-\frac{1}{3}x\\\\2=\frac{7*3}{1*3}x-\frac{1}{3}x\\\\2=\frac{21}{3}x-\frac{1}{3}x\\\\2=\frac{20}{3}x\\\\\frac{20}{3}x=2\\\\x=2*\frac{3}{20}\\\\x=\frac{3}{10}$