-10/3 rational or irrational number

-10/3 is a rational number

Step-by-step explanation:

Rational numbers are the ratios of two integers.

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:

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225