Question

\frac{3}{10} = \frac{x}{x + 2} " alt=" \frac{3}{10} = \frac{x}{x + 2} " align="absmiddle" class="latex-formula">

Answer 1

First, we cross multiply:
3(x+2)=10x
Next we expand the brackets and collect like terms:
3x+6=10x
6=7x
Now we divide both sides by 7 to isolate x:
x=6/7