Add6–3a+b;a–7–6band3b+2–a
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step by step explained
-3a -2b + 9
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Step-by-step explanation:
6-3a+b+a-7-6b+3b+2-a
=--3a+a-a+b+3b-6b+6-7+2
=-3a-2b-1
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