Question

add a+b -1,b-a+1,1-2b​

Answer 1

Answer:

a + b -1 + b - a + 1 + 1 - 2b

First, we have to group the like terms together and add them.

⇒ a - a + b + b - 2b + 1 + 1 - 1

⇒ 0 + 0 + 1

⇒ 1

∴ Hence, a + b -1 + b - a + 1 + 1 - 2b is 1.

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Answer 2

Answer:

1

See this image. Hope you will understand.