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10-11-2020
Mathematics

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What is the solution to this system of equations?

x − 2y = 15
2x + 4y = -18

Respuesta :

meghannaylis meghannaylis

10-11-2020

Answer:

y=-6 ; x=3

Step-by-step explanation:

x − 2y = 15

2x + 4y = -18

x − 2y = 15

+2y . +2y

x=2y+15

2(2y+15) + 4y = -18

4y+30+4y=-18

8y+30=-18

-30 . -30

8y=-48

y=-6

x=2(-6)+15

x=-12+15

x=3

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