Question

what is the answer for x-3/x=9/10

Answer 1

$\frac{3}{x}=\frac{9}{10}$

Start by multiplying both sides of the equality by x

$\begin{gathered} x\cdot\frac{3}{x}=\frac{9}{10}\cdot x \\ 3=\frac{9x}{10} \end{gathered}$

Multiply boths sides by 10

$\begin{gathered} 3\cdot10=\frac{9x}{10}\cdot10 \\ 30=9x \end{gathered}$

divide both sides by 9

$\begin{gathered} \frac{30}{9}=\frac{9x}{9} \\ \frac{30}{9}=x \end{gathered}$

simplify the expression

$\begin{gathered} x=\frac{30}{9} \\ x=\frac{10}{3} \end{gathered}$