from the sum 3a-b+9 and a square +7a+4b-1 please say fast
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Answer:
3a-b+9
+7a+4b-1
10a+3b+8
or
3a -b +9 = 7a +4b-1
7a - 3a = 4b+b -9 -1
4a = 5b -10
I hope that it will help u and mark me as the brainiest
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