simplify (3a+b)-(9a-5b-6)
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Step-by-step explanation:
(3a+b)-(9a-5b-6)=0
3a+b-9a+5b+6=0
-6a+6b+6=0
-6a+6b=-6
-6(a-b)=-6
a-b=-6/-6
a-b=1
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