  PRE-ALGEBRA
ALGEBRA 1
GEOMETRY
ALGEBRA 2
TRIGONOMETRY
PRE-CALCULUS
CALCULUS    ALGEBRA 1, 2012 PAGE: 354 SET: Exercises PROBLEM: 44
Please look in your text book for this problem Statement  Substitution:

Given equations are, ----------(1) ------(2)

The first equation is already solved for y,

so,  substitute for y in the second equation. (Second equation) (Substitute ) (Multiply: ) (Add: )

Apply division property of equality: If a = b then . (Divide each side by 20) (Cancel common terms) (Divide: ) Substitute for x in either equation to find y. (first equation) (Substitute ) (Multiply: )

The solution is . Check the solution:

To check, Substitute and in either equation. (first equation) (Substitute and ) (Multiply: )

The solution  is true.

If the system have only one solution, such as . If the system have only one solution, such as . TESTIMONIALS
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