Wednesday

August 20, 2014

August 20, 2014

Posted by **lila** on Tuesday, December 21, 2010 at 9:22pm.

3x+3y=-6(this is a negative 6)

7x+4y= 1

- 8th grade math -
**Bosnian**, Tuesday, December 21, 2010 at 10:30pm3x+3y=-6

3y=-6-3x Divide with 3

y=-2-x

7x+4y=1

7x+4*(-2-x)=1

7x-8-4x=1

3x-8=1

3x=1+8

3x=9 Divide with 3

x=9/3

x=3

y=-2-x

y=-2-3

y=-5

x=3 y=-5

Cheking of results:

3x+3y=3*3+3*(-5)=9-15=-6

7x+4y=7*3+4*(-5)=21-20=1

**Related Questions**

8th Grade Math - 5/2t - t = 3 + 3/2t I'm having a hard time to solve this ...

algebra 1 - Can someone please help me with this inequality problem -3-8>(4x+...

8th Grade Math - Can somebody help me solve this problem? Simplify and evaluate ...

8th grade Math - Hi I need help with my math problem. It is: Name the function ...

8th Grade Algebra - How do you solve this problem? 3x = 4y x + y = 21 Help ...

8th grade algebra - need ideas of personal experiences to create a mathematical...

8th grade algebra - need ideas of personal experiences to create a mathematical...

Alegbra - who ever will help me I do not understand this problem? Solve each ...

algebra - can someone help me understand how to solve this... i have no idea ...

8th grade math - y=1/4x-1 1/2y=x-2 2x+3y=3 3y=5-2x 4x-y=3 4x=y=1 I don't ...