Question

what should be subtracted from a b + 1 to make it 5 a b -5?

Answer 1

Answer:   - 4ab + 6

ab + 1 - (-4ab + 6 )

= ab + 4ab + 1 - 6

= 5ab - 5

Answer 2

Answer:

let x should be added to no.

ab+1-x=5ab-5

x=5ab-5-(ab+1)

x=ab(5-1)-(5+1)

x=4ab-6

Step-by-step explanation:

This is it answer.......