X-9=y+2
is it linear or nonlinear

x - 9 = y +2 => y = x - 11

It is linear because the exponent of x number is equal to 1.

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: