( x + y ) ( 3a - b ) - ( 2x - 3y ) ( 3a - b)
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Answer:
-3ax+xb+12ay-4yb
Step-by-step explanation:
(3ax-xb+3ay-yb)-(6ax-2xb-9ay+3yb)
3ax-xb+3ay-yb-6ax+2xb+9ay-3yb
-3ax+xb+12ay-4yb
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