Question

$frac{2}{5}alpha+frac{3}{10}alpha-frac{2}{15}alpha=2$

Answer 1

$frac{2}{5}a+frac{3}{10}a-frac{2}{15}a=2$

$frac{12}{30}a+frac{9}{30}a-frac{4}{30}a=2$ 

$frac{12+9-4}{30}a=2$ 

 $frac{17}{30}a=2$

$a=2:frac{17}{30}$ 

 $a=2*frac{30}{17}$

$a=frac{60}{17}$ 

$a=3frac{9}{17}$