(3a²b-4ab²+a²b²)-(2ab²+a²b²+5a²b)

8ab

Step-by-step explanation:

-2a^2b-6ab^2

Step-by-step explanation:

(3a²b-4ab²+a²b²)-(2ab²+a²b²+5a²b)

3a²b-4ab²+a²b²-2ab²+a²b²+5a²b

(3a^2b-5a^2b)+(-4ab^2-2ab^2)+(a^2b^2-a^2b^2)

-2a^2b-6ab^2

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:

step-by-step explanation: