Question

what should be subtracted from 3a + 7b - 10 to get - 2a - 7b + 9

Answer 1

Answer:

(5a+14b-19) should be subtracted to get the output.

Step-by-step explanation:

Let the difference be x.

3a+7b-10-x=-2a-7b+9

-x=-2a-7b+9-3a-7b+10

Joining the like terms,

-x=-2a-3a-7b-7b+9+10

Subtracting the like terms,

-x=-5a-14b+19

x=5a+14b-19

∴The solution is 5a+14b-19