Posted by Anonymous on Sunday, February 15, 2009 at 9:45pm.
Solve by elimination method.
0.3x – 0.2y = 4
0.5x + 0.5y = 85/19

math  Anna, Sunday, February 15, 2009 at 10:27pm
I believe you start by multiplying the 0.2 by 0.5 and the 0.5y by 0.2. That way you can eliminiate the y. Then you solve for x. from there, you can solve for your y value........
Hope that helps!

math  PsyDAG, Monday, February 16, 2009 at 10:31am
0.3x – 0.2y = 4
Multiply both sides by 10.
3x  2y = 40
Add 2y to both sides and divide by 3.
x =(2y+40)/3
Substitute that value for x in the second equation and solve for y. Put the value for y in the above equation to solve for x. Check by putting both values in the second equation.
I hope this helps. Thanks for asking.
Answer This Question
Related Questions
 math elimination method  elimination method really confuses me. solve by ...
 math  Please solve the system with the elimination method. Explain each step as...
 Algebra  Solving system of linear equations by using the apropiate method name ...
 Algebra 1  bobpursey, In this problem you helped me with earlier: Solve using ...
 Math  Solve by eliminnation methods 2x4y=5 2x4y=6 solve the system by ...
 Algebra  Solve by elimination method. 7r3s=14 3r+7s=64 Could never figure out ...
 Algebra/Elimination method  Solve using the elimination method. If the system ...
 Math  How do I solve these problems, I really need help. Solve by substitution ...
 Math Elimination method  Use the elimination method to solve x+8y= 47 x + 4y= ...
 MaTh = Algebra = help  Solve this system of linear equaiton by an algebraic ...
More Related Questions