  PRE-ALGEBRA
ALGEBRA 1
GEOMETRY
ALGEBRA 2
TRIGONOMETRY
PRE-CALCULUS
CALCULUS    California Algebra 1, 2007 SELECT PAGE NO. SELECT PROBLEM NO. FOR THE PAGE

 PAGE: 455 SET: Exercises PROBLEM: 9
Please look in your text book for this problem Statement  The equations are   Multiply the first equation by 2

Now the equation is  Equation (1)

Multiply the second equation by 3

Now the equation is  Equation (2) Since the coefficients of the y-terms, -6 and -6, are additive inverses,

you can eliminate these terms by adding the equations.

Subtract the equations to eliminate variable y. (Write the equations in column form and Subtract) Apply division property of equality: Divide each side by negative 7.  (Cancel common terms) (Divide: )

Now Substitute in either equation to find the value of y. (Equation 1)  (Multiply: )

Apply Addition property of equality: Add 28 to each side.  (Apply additive inverse property: ) (Add: 8 + 28 = 36) Apply division property of equality: Divide each side by negative 3.  (Cancel common terms) (Divide: )

The solution is . The solution is . TESTIMONIALS
 "I want to tell you that our students did well on the math exam and showed a marked improvement that, in my estimation, reflected the professional development the faculty received from you. THANK YOU!!!" June Barnett "Your site is amazing! It helped me get through Algebra." Charles "My daughter uses it to supplement her Algebra 1 school work. She finds it very helpful." Dan Pease
 Tweets by @mathskeydotcom

QUESTIONS? LET US HELP.
mathskey.com is not affiliated with any Publisher, Book cover, Title, Author names appear for reference only