Answer:
11) x = 45
12) x = 30
Step-by-step explanation:
11)
3x + x = 180
4x = 180
x = 45
12)
4x = 5x - 30
4x - 5x = -30
-x = -30
x = 30
$15.75
$6p-$2.25
1,2,3,4,5,6,10,12,15,20,30,60
Your answer would be 13.2.
