What should be subtracted from 7x – 8y to get x + y + z?

1.	What should be subtracted from 7x – 8y to get x + y + z?
Answer» Let A should be subtracted from 7x – 8y to get( x+y + z) (7x – 8y) – A = x + y + z A = (7x – 8y) – (x + y + z) = 7x – 8y – x – y – 2 = 6x – 9y – 2

Answer»

Let A should be subtracted from 7x – 8y to get( x+y + z)

(7x – 8y) – A = x + y + z
A = (7x – 8y) – (x + y + z)
= 7x – 8y – x – y – 2
= 6x – 9y – 2

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