Question

help me guys
i should tell you all that it not a test it is revision sheet (Homework)
And i do know the answer and yes if you do not know the answer please do not answer as it urgent
please
please
please ​

Answer 1

Step-by-step explanation:

7x

-7x

=0 is the correct answer for 1 question.

plzz thanks me..

Answer 2

Answer:

16)

7x - (-7x)

7x + 7x

14x

So, the correct answer is option A)

17)

x - (x - y)

x - x + y

y

So, the correct answer is option C)

Hope it helps you!!