How do I set this up and how to solve it?

Russ bought 3 medium and 2 large submarine sandwiches for $29.95. Stacy bought 4 medium and 1 large submarine sandwiches for $28.45. What is the price for each medium and each large submarine sandwich?

1 answer

3 m + 2 L = 29.95
4 m + 1 L = 28.45

3 m + 2 L = 29.95
8 m + 2 L = 56.90
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-5 m = - 26.95

m = 5.39
L = 28.45 -4(5.39) = 6.89