Round each number to the nearest whole number. what is the best estimate for the sum of 317.38 82.21? a. 410 b. 400 c. 399 d. 390

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:

answer: idk

step-by-step explanation: