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Sep 28, 2018
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Mathematics
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Scicalculator
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1
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3
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1st is D
2nd is
5x + 4 + 7x + 2 = 90
12x + 6 = 90
12x = 84
x = 7
Thorin Oakenshield
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Oct 3, 2018
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Thorin Oakenshield
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