X=y+6

X+6y=20

Solving systems of equations using substitution

Question

Mathematics

Simon Mckee

16 December, 09:56

X=y+6

X+6y=20

Solving systems of equations using substitution

+4

Answers (1)

Know the Answer?

Josh Gray · Answer 1

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

X=y+6X+6y=20Solving systems of equations using substitution

X=y+6

X+6y=20

Solving systems of equations using substitution