Question

1) for
x+y=a and x-y=b, what is a+b?​

Answer 1

Answer:

a+b

Canbe written as

(x+y) +(x-y)

Because a=x+y, b=x-y

(x+y) +(x-y)

= x+y+x-y

Here +y and - y cancelled

=2x

Therefore, a+b =2x

Hope it helps

Answer 2

Answer:

☝️ this answer is right

Step-by-step explanation:

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