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Anonymous
What number when doubled has seven added and gives 13?
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The answer to 1 over 2x plus 13 equals 9 is x equals -8.
2x-3y=13
X= -8
2x + 5 = 31 2x = 31 - 5 = 26 x = 13
2x+7x-10=4x+3-2x 9x-10=2x+3 7x=13 x=13/7ans