Question

what should must be added to 12 x 3 - 4 x 2 + 3 x minus 7 to make the sum x 3 + 2 x 2 - 3 x + 2?

Answer 1

if you do 8-_=5 your answer would be 3 for this you subtracted 5 from 8. similarly in this situation you should subtract the no. from its sum and you will get the answer