Question

Which expressions are equivalent?
3x-7y and -7y+ 3x
3x-7y and 7y-3x
3x-7yand 3y-7x
3x-7y and -3y+7X​

Answer 1

Answer:

Step-by-step explanation:

(1). (3x - 7y) and (- 7y + 3x) ⇔ 3x + (- 7y) = - 7y + 3x (Reason: Distributive property of addition)

For example: if x = 1 and y = 2 , then 3(1) - 7(2) = - 7(2) + 3(1)

- 11 = - 11

(2). (3x - 7y) and (7y - 3x)

3x - 7y ≠ 7y - 3x

For example: if x = 1 and y = 2 , then 3(1) - 7(2) ≠ 7(2) - 3(1)

- 11 ≠ 11

(3). 3x - 7y and 3y - 7x

3x - 7y ≠ 3y - 7x

For example: if x = 1 and y = 2 , then 3(1) - 7(2) ≠ 3(2) - 7(1)

- 11 ≠ - 1

(4). 3x - 7y ≠ - 3y + 7x