Question

Help please, show steps3n/7-1=1/8

Answer 1

Given:

$\frac{3n}{7}-1=\frac{1}{8}$

First, let's move the -1 to the right side. When we add $1 + \frac{1}{8}$, we get $\frac{9}{8}$.

$\frac{3n}{7}=\frac{9}{8}$

Now we can cross multiply, multiply (3n)(8) and (7)(9)

$(3n)(8)=(7)(9)$

Simplify the left side.

$24n = (7)(9)$

Simplify the right side.

$24n=63$

Divide both sides by 24 to isolate n.

$\frac{24n}{24}=\frac{63}{24}$

Simplify.

$n=\frac{21}{8}$