Answer:
x=12
Step-by-step explanation:
180 - 6x - 6x - 3x
180 - 15x
180 = 15x
180 / 15 = x
x = 12
6x + 6x + 3x = 180
180= 6x + 6x + 3x
180= 15x
x= 180/15
x= 12
plz mark me as brainliest plz
