Answer:
B
Step-by-step explanation:
9x-12=36
9x=36+12
9x=48
9x - 12 = 36
9x = 36 + 12
9x = 48
9x = 48 matches B, and doesn't match the others
3/20
0.15 = 15*100/1*100
= 15/100
= 3/20
4
3x2 is 6
2-4 is -2
6-2 is 4