Question

Simplify the expression

3a + 4 + b + 2a + 5 + b

a. 5a + b
b. 7a + 7b
c. 6a + 2b + 9
d. 5a + 2b +9

Answer 1

5a+2b+9

Explanation:

=3a+4+b+2a+5+b

=(3a+2a)+(b+b)+(4+5)

=5a+2b+9

Answer 2

the answer is d. 5a + 2b + 9