Thursday

August 28, 2014

August 28, 2014

Posted by **katie** on Wednesday, November 10, 2010 at 2:12pm.

9p+6q=78 ?

- algebra -
**Jen**, Wednesday, November 10, 2010 at 2:17pm4p+3q=36 (1)

9p+6q=78 (2)

You want to eliminate either the p's or q's to solve for one. Eliminating the q's is easier because you only have to change one equation. Multiplying (1) by -2...

-8p-6q=-72 (3)

9p+6q=78 (2)

Add the equations together.

p=6

Now substitute p=6 in either equation 1 or 2 to figure out what q equals.

**Related Questions**

Algebra - I am getting ready to start an Algebra class for the first time and I ...

SHAY - THE MATH QUESTION IS IT ALGEBRA , PRE ALGEBRA' OR GEOMETRY? Quadriatic ...

Algebra 1A - How is algebra a useful tool? what concepts investigated in algebra...

Algebra I - So- im trying to help my little brother out with his Algebra- but ...

Algebra-still need some help - Homework Help Forum: Algebra Posted by Jena on ...

algebra 1 - at a certain high school,350 students are taking algebra. the ratio ...

7th grade - There are at least 5 more than twice as many students taking algebra...

algebra 2 - Posted by hellogoodbie on Saturday, January 16, 2010 at 3:24pm. ...

Algebra II - ok now this is an algebra 2 problem... I have goten far down to ...

algebra 2 - Posted by hellogoodbie on Saturday, January 16, 2010 at 2:59pm. How ...