Answer:
x = 22
Explanation:
if 6x-18+3x=180
we can simplify by adding the 6x and 3x together to make it a bit easier for ourselves,
from this we get 9x - 18 = 180 because we want the x by itself we add 18 to give us 9x = 198 and finally we divide by both sides by 9 to just get x, therefore x=22.