PLEASE HELP THIS IS DUE IN A COUPLE MINS what number must you subtract from -13 to get a difference of 0? so i know the answer to this part; its -13 but i dont know how i got that answer like i dont know how to explain it please help :sob:

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.