Multiply the numerators together and multiply the denominators together. Then simplify.

$-\frac{73}{350}$

Remember, when you multiply you do not need to line up the decimal points. You do need to decide how many decimal points to put in the answer, however.

$0.12$

Find a common denominator then combine.

$-\frac{7}{80}$

Add the whole numbers together. Find a common denominator for the fractions and add those separately.

$(5+8)+\left(\frac{1}{9}+\frac{2}{5}\right)$

See part (c).

Convert the decimal into a fraction or the fraction into a decimal before combining.