Question

Find an expression which represents the sum of (2x + 7y) and (4x – 8y) in
simplest terms.

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Answer 1

Answer:

6x - y

Step-by-step explanation:

2x + 7y + 4x - 8y

Group like terms:

2x + 4x + 7y - 8y

Combine like terms:

6x - y

Answer 2

(2x + 7y) + (4x - 8y) = 6x-y
Combine like terms
2x+4x = 6x
7y + -8y = -1y