Wednesday

July 23, 2014

July 23, 2014

Posted by **jay jay** on Tuesday, July 8, 2008 at 12:17am.

4x-9y=18.5

7y-2x=-10.5

- algebra -
**drwls**, Tuesday, July 8, 2008 at 1:25amRewrite the second equation

-2x + 7y = -10.5 Now double it.

-4x + 14y = -21

Now add that to the first of your equations

5y = -2.5

y = -0.5

4x + 4.5 = 18.5

4x = 14

x = 3.5

**Related Questions**

math - can someone please help me with this elimination methods problem? 0.05x+0...

Math - Solve by eliminnation methods 2x-4y=5 2x-4y=6 solve the system by ...

math - Can someone help me solve the following....using elimination methods 1) ...

algebra - i need help with these problems (either a solution or how to plug them...

MAT 101 - Solve for X and Y in the following problems using either substitution ...

Algebra - Solve by elimination method. 7r-3s=14 3r+7s=64 Could never figure out ...

Algebra/Elimination method - Solve using the elimination method. If the system ...

algebra URGENT! - Solve the system using elimination. 2x – 2y = –8 x + 2y = –1 ...

College Algebra - Please help! x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above ...

algebra - I just need a quick check before I hand in my work if you would......