What includes a number and a unit?

A quantitative description of something includes a number and a unit.

A quantitative description of something that includes a number and a unit.

answ9x x 3=

step-by-step explanation:

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: