Answer:
x = 120
z = 21
Step-by-step explanation:
x and 60 are supplementary, so added together they make 180.
x + 60 = 180
subtract 60 from both sides
x = 180 - 60
x = 120
next, x and 4z+36 are equal, so you can make this equation:
x = 4z + 36
substitute x for 120 as established earlier.
120 = 4z + 36
subtract 36 from both sides
120 - 36 = 4z
84 = 4z
divide both sides by 4
84/4 = z
21 = z
