Answer:
example:
4y + 2x = 5
-4y + x = 3
take away the 4y and the - 4y because the cancel each other out
3x = 8
x = 8/3
4y + 2(8/3) = 5
4y + 5.3 =5
4y = 5 - 5.3
4y= -.3
y = -.3/4
HAAAA that question came out of nothing. probably not the best problem...