Solve the system of equations.
7x - 3y =20
Y= 5x - 4

X=
Y=

Question

07-03-2022
Mathematics

contestada

Solve the system of equations.
7x - 3y =20
Y= 5x - 4

X=
Y=

Respuesta :

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ramjaysahota ramjaysahota · Answer 1 · 2022-03-07T03:44:48+01:00

ramjaysahota ramjaysahota

07-03-2022

7x=20+3y
X=(20+3y)/7

Y=5x-4
Y=5((20+3y)/7)-4
Y=((100+15y)/7)-4
7y=100+15y-28
7y=72+15y
7y-15y=72
-8y=72
Y=-9

7x-3y=20
7x-3(-9)=20
7x+27=20
7x=20-27
7x=-7
X=-1

Answer Link

Solve the system of equations. 7x - 3y =20 Y= 5x - 4 X= Y=

Respuesta :

Otras preguntas

Solve the system of equations.
7x - 3y =20
Y= 5x - 4

X=
Y=