Question

Which expression is equivalent to (3x-5y)+(x+2y)?

1. 4x-7y
2. 4x-3y
3. 4x+3y
4. 4x+7y

Answer 1

3x - 5y + x + 2y....combine like terms
4x - 3y

Answer 2

(3x-5y) + (x+2y)

Let just go ahead and open brackets and simplify

3x - 5y + x + 2y

3x + x + 2y - 5y

4x - 3y

So it is option (2).