Question

subtract 4a - 7ab + 3b + 12 from 12a - 9ab + 5b -3

Answer 1

Answer:

8a-2ab+2b-15

Explanation:

subtracting 4a - 7ab + 3b + 12 from 12a - 9ab + 5b -3

= 12a-9ab+5b-3 -(4a-7ab+3b+12)

= 12a-9ab+5b-3-4a+7ab-3b-12

= 12a-4a-9ab+7ab+5b-3b-3-12

=(12-4)a+(-9+7)ab+(5-3)b-15

= 8a-2ab+2b-15

••••

Answer 2

$<b> <i> <u> Heya!! </b> </i> </u>$

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$<b> <u> Subtraction of variables :- </b> </u>$

→ Subtract 4a - 7ab + 3b + 12 from 12a - 9ab + 5b - 3

=> 12a - 9ab + 5b - 3 - ( 4a - 7ab + 3b + 12 )

=> 12a - 9ab + 5b - 3 - 4a + 7ab - 3b - 12

°•° $<u> Combining Like terms </u>$

=> (12a - 4a )+ (5b - 3b) + (7ab - 9ab ) - 3 - 12

=> 8a + 2b - 2ab - 15

$<b> <i> <u> Final Expression :- 8a + 2b - 2ab - 15</b> </i> </u>$