0
Anonymous
The number works out as 14
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It is the equation 2x - 8 = 20
7x - 8 = -297x - 8 + 8 = -29 + 87x = -217x/7 = -21/7x = -3
n<7
2n-4
13 < 2n - 5 < 21
20-2x=3x-10 if its relevant the solution is x=6