Answer:
Step-by-step explanation:
#1.
-36 + 3x = -24-18
3x = -24-18+36
x = -6/3
x = -2
#2.
-45x13 = 77+90 --> something is wrong with the equation!
is it -45x + 13 = 77+90 or -45x - 13 = 77 + 90
if it's -45x - 13 = 77 + 90
-45x = 77+90+13
x = -180/45
x = -4