algebra
posted by jay jay .
solve the elimination methods
4x9y=18.5
7y2x=10.5

Rewrite the second equation
2x + 7y = 10.5 Now double it.
4x + 14y = 21
Now add that to the first of your equations
5y = 2.5
y = 0.5
4x + 4.5 = 18.5
4x = 14
x = 3.5