Thursday

July 24, 2014

July 24, 2014

Posted by **mikey123** on Friday, November 7, 2008 at 11:11pm.

3x + 6y = 27

-2x + y = 12

what is the solution of the system..(type an ordered pair, or N if there is no solution)

- math -
**LaTarial**, Friday, November 7, 2008 at 11:25pm3x+6y=27

y=2x+12

Then 3x+6(2x+12)=27

3x+12x+72=27

15x=45

x=9

- math -
**mikey123**, Friday, November 7, 2008 at 11:34pmi get that part but it tells me im wrong that they want it something like this..(3,4)i dont get that..

- math -
- math -
**bobpursley**, Saturday, November 8, 2008 at 5:28amGeepers, if x is 3, calculate y from either equation and put it in that form (3,?)

Note that La Tarial made a typo, x=3, not 9

- math -
**bobpursley**, Saturday, November 8, 2008 at 5:36amActually, it is wrong, La Trial made another error.

3x+12x+72=27

15x=-45

x=-15

so y = 2(-15)+12

**Related Questions**

math - solve by the substitution method 3x + 6y = 27 -2x + y = 12 what is the ...

Algebra - Solve by substitution method. 6x+9y=-12 -5x+y=27 What is the solution ...

Math - Solve by the elimination method. 4x +5y=1 8x +10y=2 What is the solution ...

Algebra 1a - Solve by the substitution method. 5x + 8y=0 x=2 2y Type ordered ...

algebra - solve by the elimination method 3r - 7s =-29 7r + 3s = 29 What is the ...

algebra - use method of substitution to solve the system of linear equations. 2x...

Algebra - I just wanted to verify the answer I came up with. Solve by the ...

Algebra - Solve by the elimination method. 5r-7s=-37 7r+5s=37 What is the ...

math - Solve the system of equations by graphing. Then Classify the system? 4u+v...

math - Solve the system of equations by graphing. Then classify the system? y= -...