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alexandr402 [8]
3 years ago
7

3 regular pizzas and 2 small pizzas cost $31.

Mathematics
1 answer:
FrozenT [24]3 years ago
4 0

first of all, lets set up the equation

3x + 2y = 31

9x + 8y = 103

+--------------------

now make them equal

12x + 8y = 124

9x + 8y = 103

+----------------------

x=7

y=5

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