Answer:
x = 19
z = 113
Step-by-step explanation:
5x-28 = 7x-66
add 66 to both sides
5x+38 = 7x
subtract 5x from both sides
38 = 2x
divide by 2
19 = x
z + 5x -28 = 180
z + (5 * 19) - 28 = 180
z + 95 -28 = 180
z + 67 = 180
subtract 67 from both sides
z = 113
Check:
113 + (7*19) - 66 = 180
113 + 133 - 66 = 180
246 - 66 = 180
180 = 180
