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bija089 [108]
3 years ago
15

-2x - 5y = 13 2x - 5y =17

Mathematics
1 answer:
Flura [38]3 years ago
6 0

{-2x-5y=13

<u>{2x-5y=17    </u>(+)

<em />  -2x+2x-5y-5y=13+17

-10y=30     /:(-10)

y=-3

2x-5y=17

2x-5*(-3)=17

2x+15=17

2x=2

x=1

<em>Solution: (1; -3)</em>       

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