20x5/30+10x4/4x20/35
\(\frac{20\times5}{30}+\frac{\frac{10\times4}{4}\times20}{35}\\ =\frac{20\times5}{30}+\frac{\frac{10\times\not{4}}{\not{4}}\times20}{35}\\ =\frac{20\times5}{30}+\frac{10\times20}{35}\\\)
You should be able to take it from there. :)
