Question

Can sb help me!!!! It’s not much!!!!

Answer 1

-7=12n-4

-12n-7=-4

-12n=-4+7

-12n=3

n=-1/4

5x+7=4

5x=4-7

5x=-3

x=-3/5

-28+15y=17

15y=17+28

15y=45

y=3

x/3+5=-2

x+15=-6

x=-6-15

x=-21

Explanation: