Question

$5x + 5y = 120 \\ 4x + 6y = 350$

Answer 1

5x+5y=120   (4)
4x+6y=350   (-5)
20x+20y=480-20x-30y=-1750//     -10y=-1270y=1270/10y=1274x+6(127)=3504x+762=3504x=350-7624x=-412x=-103