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a+b+b+b+80+90=100 how???

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https://www.meritnation.com/ask-answer/question/a-b-b-b-80-90-100then-find-the-vlaue-of-a-and-b/algebraic-expressions-and-identities/8223203    

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if this should be possible then a or b should be negative ...

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akad baked bamba bow 80 90 share 100
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a+b+b+b+-80+90=100

recorder the terms:
-80+90+a+b+b=100

combine like terms:-80+90=10
10+a+b+b+b=100

combine iike terms:b+b=2b
10+a+2b+b=100

combine like terms:2b+b=3b
10+a+3b=100
so,a=90+-3b
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Nitish what a awsm logic
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