-122
-1 and -120
-6 and -20
-15+-8=-23 -15*-8=120
you can multiply by 2, or add 120, or divide by 1/2. I'd say it's best to multiply, or find the "product."
70
-10 and 2 -12 and 4 -20 and 12
120
2x6 is 12 Add a zero (the zero from 20) and you have: 120
140
Those two numbers would be 80 and 40. 80*40=3200 80+40=120
The factors that multiply to 120 and add up to -8 are -12 and 10. This is because when you multiply -12 and 10, you get -120, and when you add them together, you get -8. Thus, the pair of factors you are looking for is (-12, 10).
144. You divide 120 by 5 since 20 is one fifth of 100 percent. You will end up with 24. You then add it to the original number, 120, and you get 144.