.37 divided to 5.18 = 14
First you move the decimals of .37 to the right and add two zeros since u moved to places to the right. Then 37 can go into 51800 14 times
we are given

Firstly, we will simplify left side
and then we can solve for k
Left side is

we can arrange like terms



now, we can use property of exponent



now, we can equate it with right side
and we get

We can see that both sides have 30 , a and b
and they are equal
so, exponent of a must also be equal

now, we can solve for k

................Answer
Hey! Sorry for the 6 day late response. The answer is:
25%
21/30 as a percent would be 70%.
Answer:
X = 20
The picture explains my answer