what is the answer?
x+y=15
-2x+5y=-2

Question

11-12-2020
Mathematics

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what is the answer?
x+y=15
-2x+5y=-2

Respuesta :

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lilahdelavega8 lilahdelavega8 · Answer 1 · 2020-12-11T22:15:04+01:00

lilahdelavega8 lilahdelavega8

11-12-2020

multiply the first equation by 2

2x + 2y =30

now we’ll add the second equation to the first equation

2x + 2y =30
-2x+5y= -2

7y=28

divide by 7

y=4

now plug y back into the first equation

x + 4 = 15

subtract 4

x=11

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what is the answer? x+y=15 -2x+5y=-2​

Respuesta :

Otras preguntas

what is the answer?
x+y=15
-2x+5y=-2