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Mathematics, 07.07.2019 14:30 TombRaider167

Will give 5 stars! a snack of an apple, a brownie, and a cheese stick has 270 calories. two brownies and an apple have 290 calories. two apples and three cheese sticks have 420 calories. how many calories are in each item? let a=calories in an apple, b=calories in a brownie, and c=calories in a cheese stick.

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