y-3x=5 2x=3y+6 substitution method equations

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y-3x=5 2x=3y+6

Guest Jun 5, 2014

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Best Answer

+3454

+5

y-3x=5 | 2x=3y+6

y=3x+5

|

|

V

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

2x=9x+15+6

-9x

-7x=21

-(-7x=21)

7x = -21

x = -3

y-3(-3)=5

y-(-9)=5

y+9 = 5

-9 -9

y= -4

So, y= -4 and x = -3

Let's check it:

y-3x=5

(-4) - 3(-3) = 5

-4 - (-9) = 5

-4 +9 = 5

5=5 ✔

NinjaDevo Jun 5, 2014

2⁺⁰ Answers

+3454

+5

Best Answer

y-3x=5 | 2x=3y+6

y=3x+5

|

|

V

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

2x=9x+15+6

-9x

-7x=21

-(-7x=21)

7x = -21

x = -3

y-3(-3)=5

y-(-9)=5

y+9 = 5

-9 -9

y= -4

So, y= -4 and x = -3

Let's check it:

y-3x=5

(-4) - 3(-3) = 5

-4 - (-9) = 5

-4 +9 = 5

5=5 ✔

NinjaDevo Jun 5, 2014

+129852

0

Great job, NinjaDevo......well presented, too...Thumbs Up and Points......!!!!

CPhill Jun 5, 2014

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