(7 • 2) + 4^2 - 12 ÷ 4 = 27
Step-by-step explanation:
• = multiplication
^ = exponent
- = subtraction
÷ = division
You can use a strategy called GEMS to solve these expressions too.
G grouping symbols | () {} []
E exponents | n^2
M multiply/divide | ÷ x •
S subtract/add | + -
Always start with your grouping symbols. The grouping symbols are (7 • 2), which equals 14.
Now, our expression is 14 + 4^2 - 12 ÷ 4.
Next, you want to do your exponents.
4^2 = 16.
Now, our expression is 14 + 16 - 12 ÷ 4.
Next, you do division.
12 ÷ 4 = 3.
The expression is now 14 + 16 - 3.
You do the addition first.
14 + 16 = 30.
The expression is now 30 - 3.
Lastly, we do subtraction.
30 - 3 = 27.
I hope this helps!