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Using algebra, find the smallest three consecutive integers whose sum is greater than 20
What in did is x+x+1+x+2>20
3x+3>20
3x>30 then I'm stuck
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x + x+1 + x+2 > 20
3x + 3 > 20,
3x > 20-3,
3x > 17.
The solution in integer numbers is x >= 6.
Thus your triples are (6, 7, 8), (7, 8, 9), (8, 9, 10) . . . and so on.
The smallest triple is (6, 7, 8) with the sum of 21.