$11.13
Step-by-step explanation:
24 cans = $38.16
divide both sides by 24 to find the cost per can, as this leaves us with 1 can on one side
24 cans / 24 = $38.16 / 24
1 can = $1.59
multiply both sides by 7 to get 7 cans of soup on one side, which is what we want
1 can * 7 = $1.59 * 7
7 cans = $11.13