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Variables x,y

Coeficientes 1,2

Constant ,4

4 terms

Step-by-step explanation:

Variables: x, y

Coefficients: 1, 2

Constant: 4

There are 4 terms.

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: