angeliajohnson
angeliajohnson angeliajohnson
  • 22-04-2021
  • Mathematics
contestada

Solve the system by substitution.
1. y= 7x
x − 7y = -48

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dignoris
dignoris dignoris
  • 22-04-2021

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justanordinarypeople
justanordinarypeople justanordinarypeople
  • 22-04-2021

Answer:

x=1

y=7

Explaination:

y=7x---------(1)* *First equation

x-7y=(-48)----(2)* *Second equation

Put (1)* into y on (2)*

x-7(7x)=(-48)

x-49x=(-48)

-48x=(-48)

48=48x

48÷48=x

1=x or x=1--------(3)* *Third equation

Put (3)* into (1)*

y=7(1)

y=7

feel free to ask me

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