Answer:
Step-by-step explanation:
so the equation would be 63+12x=15x
now you would have to isolate the variables
63+ 12x= 15x
-12x -12x
leaving you
63 = 3x
21=x
Hoped that helped
If this is good plz mark me as brainliest
15 boxes=3m=300cm
1 box=300cm÷15
=20cm
Answer:102.22