2
b
+
9
Explanation:
(
7
−
b
)
+
(
3
b
+
2
)
We can solve this pretty quickly using the order of operations:
P: Parentheses
E: Exponents
M: Multiplication
D: Division
A: Addition
S: Subtraction
P: Parentheses. There is nothing to simplify inside the parentheses, so we can get rid of them
=
7
−
b
+
3
b
+
2
There are no exponents, multiplication, or division so we can skip those.
Addition/Subtraction will occur if we simply add or subtract like terms. First, it may be helpful to combine like terms so that they are next to each other:
=
7
+
2
+
3
b
−
b
=
9
+
2
b
or
2
b
+
9
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