Solve using the substitution method 3x+5 =y. 3= 2y +x The x coordinate is ?

asked Feb 1, 2015 134k views

1 vote

Solve using the substitution method
3x+5 =y. 3= 2y +x
The x coordinate is ?

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3 votes

$3x+5=y\\ 3=2y+x\\\\ 3=2(3x+5)+x\\ 3=6x+10+x\\ 7x=-7\\ x=-1$

David Mulder answered Feb 1, 2015

7.5k points

5 votes

3x+5 =y

3= 2(3x+5) +x
3=6x+10+x
3=7x+10

-7=7x

x=-1 :))

Shane Doyle answered Feb 7, 2015

7.3k points

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