We are given the following expression
Let us simplify the expression
Recall the order of operations (PEMDAS)
Parenthesis, Exponents, Multiplication & Division, Addition & Subtraction
So first solve the exponents, then division and finally addition
Therefore, the simplified answer is 21.
Similarly, the second expression is given by
First, perform all the operations inside the parenthesis and then division
Therefore, the simplified answer is 5.