Question

Explain how to simplify this expression:
(
7
a
+
9
)
+
(
4
a
−
7
)
.

Answer 1

Answer:

11a+2

Step-by-step explanation:

(7a+9)+(4a−7)

7a+4a+9-7

11a+2

Answer 2

Answer:

11a + 2

Step-by-step explanation:

(7a+9)+(4a-7)

Take out parenthesis

7a + 9 +4a - 7

add like terms

11a +2