Use the Order of Operations to simplify.
.
See “Basic Math: Lesson 3” for a detailed review of Order of Operations. 2 – 2(–3) = 2 + 6 = 8
The answer is 8. Y
SOLUTION: Use parentheses in place of the variables.
Now place the numerical values inside the parentheses:
Perform the Order of Operations to simplify to a single number:
The answer is 10. Y
SOLUTION: For this example, it is vital to use parentheses for the y variable. Here is the correct substitution:
=9–2=7 If parentheses were not used, this would be the <incorrect> answer:
15