Question

addition
7a+6ab+3c,-9a-2ab+6c​

Answer 1

Here,

$\dag \: \: \bf7a + 6ab + 3c + ( - 9a - 2ab + 6c) \\ \sf \small{ \leadsto 7a + 6ab + 3c - 9a - 2ab + 6c} \\ \sf \leadsto(7 - 9)a + (6 - 2)ab + (3 + 6)c \\ \sf \leadsto \red{- 2a + 4ab + 9c }$

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Answer 2

To find:- 7a+6b+3c,-9a-2ab+6c

Sol'n :- (7a-9a) +(6ab-2ab) +(3c+6c)

= (-2a)+(4ab) +(9c)

= -2a+4ab+9c

ans. =[-2a+4ab+9c]