The combined land area of the countries a and b is 188973 square kilometers. country a is larger ny 673 square kilometers. determine the land area of each country

x+y=18897

x=y+673

2y+673 = 18897

2y = 18224

y= 9112

x = 9112+673 = 9785

9112 + 9785 = 18897

 so one country is 9112 and the second country is 9785

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: