Explain how you could use a property of equality to show the following: if 3x=28 then 3x-5=23

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:

191 students play sports and ninety-seven 10th graders were surveyed.

step-by-step explanation: