The sum of the numerator and the denominator of a fraction is 216. The fraction is equivalent to $\frac{2}{7}$. What is the value of the denominator?

168

Step-by-step explanation:

The fraction is 48/168.

48 + 168 = 216

48/168 = 2/7

The value of the denominator is 168.

We can solve simultaneous equations to get the x and y coordinates.

x + y = 216

x/y = 2/7

x = 48

y = 168

2

Step-by-step explanation:

7x+3=2x+13

move variable to the left and change sign

7x-2x=13-3

collect like terms

5x=10

divide by 5 on both sides of equation

x=2