Adding and Subtracting Fractions and Decimals

Convert $\frac{3}{5}$ into a decimal $(0.6)$ and add $0.4+0.6=1$.

Convert $\frac{3}{4}$ into a decimal $(0.75)$. Subtract 0.6 from 0.75, giving 0.15.

Convert $\frac{4}{5}$ to 0.8, then add: $0.875+0.8=1.675$.

Convert $\frac{1}{2}$ to 0.5 and add $0.3+0.5=0.8$. Converting 0.8 to a fraction gives $\frac{4}{5}$.

Convert 0.5 to $\frac{1}{2}=\frac{7}{14}$. Subtract $\frac{2}{7}=\frac{4}{14}$. Then $\frac{7}{14}-\frac{4}{14}=\frac{3}{14}$.

Convert 0.3 to a fraction $\frac{3}{10}$. Rewrite $\frac{3}{10}$ as $\frac{18}{60}$ and $\frac{5}{12}$ as $\frac{25}{60}$. Adding gives $\frac{18}{60}+\frac{25}{60}=\frac{43}{60}$.