Question

if a+b =1 then a-b = ???

Answer 1

A+b=1
b=1-a
Now putting in a-b equation
Value of b= 1-a
a-(1-a)
a-1+a
2a-1 answer

Answer 2

hey mate,

your answer is in the attachment...

thanks..
nice to help you ✌️✌️

Regards