What is the solution to the proportion 6/10 = 9/x

A. 30

B. 15

C. 13

D. 5.4

The answer is B 15 ...

First flip both side: 10/6 = x/9

Find for x:

(10/6) = * / 9

(10/6) * 9 = x

x = 15

6/10 - 9/x = ?

9/x (simplify)

6/10 - 9/x = ?

3/5 (simplify this as well)

3/5 - 9/x=?

L (denominator) : 5

R (denominator) : x

LCM (Least common multiple) : 5 (x)

Switch the denominators around

L (denominator) : x

R (denominator) : 5

3 (x) - 45 / 5 (x)

3 (x) ➡3 (x - 15)

3 (x) - 15 / 5 (x) = ?

3 (x) - 15 = ?

3 = ? (lets solve this problem)

x - 15 = ?

Now, lets add (+) the number 15 from each of the side sides of the problem that is shown above. (x - 15 = ?)

Finally, we get our result of this problem

x = 15