Does anyone know how to do this.
I don’t know how to do it

Step-by-step explanation:

We must satisfy the equation that

n must make the middle number greater than -15 but less than 6.

Solve 3n up to -15.

This means that n can be greater than -5.

This means that n must greater than -5 but less than 2.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: