Question

Suppose a+b=0 so what equals a-b

Answer 1

a-b = 2a

a-b = -2b

Explanation:

a+b = 0

Subtract b from each side

a+b - b=0-b

a = -b

a-b =

Replace a with -b

-b -b= -2b

a = -b

Divide by -1

-a =b

or replace b with -a

a - (-a)

a+a

2a