Question

Efetue:

1/ab + 3/2b - 6b/ 5a

Answer 1

$\frac{1}{ab}+\frac{3}{2b}-\frac{6b}{5a}=\\\\\frac{1*(10)+3*(5a)-6b*(2b)}{10ab}=\\\\\frac{10+15a-12b^2}{10ab}$