Question

What should be added to  -3a +7b -16 to get the sum-8 ?​

Answer 1

Answer:

3a - 7b + 8

Step-by-step explanation:

2nd - 1st

(-8) - ( -3a +7b -16)

                                       -8

                       -(-3a +7b -16)

Sign changes

              -8

+3a - 7b + 16

___________

3a - 7b + 8