12. Simplify 12a² b + 3ba and find the coefficient u
18. A man had 273 + 7x2 -- 5x + 6. he spent x - 21-
him?
*b, he spent X - 2x2 + x + 5. Find the amount left with him
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Simplyfy to lable 12.ab+ 3 bac, a+b b+c.
plz mark as brainlist answer..
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