# How do you simplify 2 + 3 times 5^2 - 7?

Feb 27, 2016

Use the order of operations:
1. exponentiation
2. multiplication
3. addition and subtraction (left to right)

#### Explanation:

$2 + 3 \times \textcolor{b l u e}{{5}^{2}} - 7$

$= 2 + \textcolor{b l u e}{3 \times 25} - 7$

$= \textcolor{b l u e}{2 + 75} - 7$

$= \textcolor{b l u e}{77 - 7}$

$= 70$