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One way to do it:
x + (x+2) + (x+4) = 42
3x + 6 = 42
3x = 36
x = 12
The integers are: 12, 14, and 16
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Another way to do it:
Three consecutive even numbers add up to 42.
Their average is (42/3) = 14, so that's the one in the middle.
They are: 12, 14, and 16
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