Question

Use the properties and mental math to solve. enter your answer in simplest form.

Answer 1

First solve the sum in the rackets.

`\begin{gathered} (1)/(5)+(1)/(2)=(1\cdot2+5\cdot1)/(5\cdot2) \\ =(7)/(10) \end{gathered}`

Now add 7/10 with 3/5.

`\begin{gathered} (7)/(10)+(3)/(5)=(7)/(10)+(6)/(10) \\ =(13)/(10) \\ =(10+3)/(10) \\ =1(3)/(10) \end{gathered}`