Posted by Anonymous on .
Solve by elimination method.
0.3x – 0.2y = 4
0.5x + 0.5y = 85/19

math 
Anna,
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,
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.