Question

Simplify the following expression.

(45x + 64y) - (3x - 16y)
A.42x - 80y
B.42x - 48y
C.42x + 80y
D.42x + 48y

Answer 1

`(45x + 64y) - (3x - 16y)`

`45x + 64y -3x +16y`

`42x+64y+16y`

`42x+80y`
The answer is:
`C. 42x+80y`

Answer 2

(45x + 64y) - (3x - 16y)

First, simplify to remove brackets. / Your problem should look like:
`45x + 64y - 3x + 16y`
Second, gather like terms. / Your problem should look like:
`(45x - 3x) + (64y + 16y)`
Third, simplify. / Your problem should look like:
`42x + 80y`

Answer: C) 42x + 80y