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2х - Зу = 9 5x - Зу = 30
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13 votes
2х - Зу = 9
5x - Зу = 30

2х - Зу = 9 5x - Зу = 30-example-1
User Laniakea
by
3.7k points

1 Answer

14 votes

Answer:

(x, y) = (7, 5/3)

Explanation:

2x - 3y = 9

5x - 3y = 30

(5x-3y) - (2x-3y) = 30 - 9

5x-3y - 2x +3y = 21

3x = 21

x = 7

So, substituting the value of x into the first equation, we get 2*7 - 3y = 9. Simplifing, we get,

14 - 3y = 9

-3y = -5

y = 5/3

User Sergey Sypalo
by
5.1k points
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