Question

What number must be subtracted from -12 to obtain 24 ?
What number must be subtracted from -20 to obtain 15 ?

Answer 1

-12-x=24 -x=36 x=-36
-20-x=15 -x=35 x=-35

Answer 2

so its -36 and -35 @Kkutie7

Answer 3

check the work. -12-(-36)= -12+36=24
and -20-(-35)=15 so yes

Answer 4

OK good =)