solve the following system of equations by linear combination: 5x 2y = 14 y = x – 7

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23-07-2016
Mathematics

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solve the following system of equations by linear combination: 5x 2y = 14 y = x – 7

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apologiabiology apologiabiology · Answer 1 · 2016-07-23T08:59:23+02:00

apologiabiology apologiabiology

23-07-2016

I would use subsitution
y=x-7
sub x-7 for every x
5x+2(x-7)=14
5x+2x-14=14
add 14 to both sides
7x=28
divide both sides by 7
x=4
sub
y=x-7
y=4-7
y=-3

x=4
y=-3
(4,-3)

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keitaronagame2219 keitaronagame2219 · Answer 2 · 2022-05-23T16:09:38+02:00

keitaronagame2219 keitaronagame2219

23-05-2022

Answer:

(–3, 4)

Step-by-step explanation:

-3= 4 - 7

4-7 =-3

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