a-b में क्या जोड़ें कि योगफल 2a+b हो जाए?
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Step-by-step explanation:
let a-b be added to x
we get
(a-b)+x=2a+b
a-b+x=2a +b
a-2a+x=b+b
-a +x = 2b
x =2b +a
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