Question

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What should be added to 4x - 7xy + 3y + 12 to get the sum 12x-9xy + 5y - 3?
how is it answer explain ​

Answer 1

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LET THE NUMBER BE A

$=>(4x - 7xy + 3y + 12)+A=12x-9xy + 5y - 3$

$=>A=(12x-9xy + 5y - 3)-(4x - 7xy + 3y + 12)$

$=>A=12x-9xy + 5y - 3-4x + 7xy -3y -12$

$=>A=12x-4x-9xy +7xy+ 5y -3y- 3-12$

$=>A=8x-2xy + 2y -15$ ANSWER

Answer 2

Answer:

>(4x−7xy+3y+12)+A=12x−9xy+5y−3

=>A=(12x-9xy + 5y - 3)-(4x - 7xy + 3y + 12)=>A=(12x−9xy+5y−3)−(4x−7xy+3y+12)

=>A=12x-9xy + 5y - 3-4x + 7xy -3y -12=>A=12x−9xy+5y−3−4x+7xy−3y−12

=>A=12x-4x-9xy +7xy+ 5y -3y- 3-12=>A=12x−4x−9xy+7xy+5y−3y−3−12

=>A=8x-2xy + 2y -15=>A=8x−2xy+2y−15 ANSWER