Answer:
54
Step-by-step explanation:
all you have to do is times 18 by 3
Answer:

Step-by-step explanation:
We have been given two expressions
and

Now we need to find out least common multiple of these two expressions.
First we need to find out what is common factor of both expressions.
and

Least common multiple means find the expression which can be divided by both expressions.
15 and 6 both goes into 30
so 30 is part of LCM (least common multiple )
Now pickup the highest exponent of each variable.
So we get 
Hence required least common multiple is 
Answer:

Step-by-step explanation:

Hi there!
The expression mr ÷ nr is equal to this.
Since the property of equality states that ab + ac = ba + bc and the like, this equation is true.
Hope this helps!
310 - 220 = 90
90/310 = x/100 (cross multiplication)
9000 = 310x
9000/310 = x
x = around 29%