Chris bought 2 chicken sandwiches and 3 bowls of vegetable soup for $50, not including tax. jim bought 1 chicken sandwich and 2 bowls of vegetable soup for$9.50, not including tax. what was the cost of a bowl of soup?

C=chicken sandwich
v=bowl of vegetable soup

so Chris: 2c+3v=50 and
Jim: 1c+2v=9.5

so 2c+3v=50 and c+2v=9.5
c+2v=9.5
subtract 2 v from both sides
c=9.5-2v
subsitute c=9.5-2v for c in 2c+3v=50
2(9.5-2v)+3v=50
distribute
19-4v+3v=50
add like terms
19-v=50
add v to both sides
19=50+v
subtract 50 from both sides
-31=v
the value of foods are never negative so there is no solution

The 40 would include the shirt and on and on

Just divide the x axis (the top) by 2 or multiply the y axis (the bottom) by 2