MissMicaliah MissMicaliah
  • 12-01-2015
  • Mathematics
contestada

X=y+6
X+6y=20


Solving systems of equations using substitution

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macio06 macio06
  • 12-01-2015
To get the answer we can subsittute first equation into second.
x+6y=20
y+6+6y=20
6+7y=20        /-6
7y=14        /:2
y=2
Now we can back substitute
x=y+6
x=2+6
x=8
Finally we get
x=8
y=2
Answer Link

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