Respuesta :

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Simplify the following:
1/3 - 1/6 + 4/18

The gcd of 4 and 18 is 2, so 4/18 = (2×2)/(2×9) = 2/2×2/9 = 2/9:
1/3 - 1/6 + 2/9

Put 1/3 - 1/6 + 2/9 over the common denominator 18. 1/3 - 1/6 + 2/9 = 6/18 - 3/18 + (2×2)/18:
6/18 - 3/18 + (2×2)/18

2×2 = 4:
6/18 - 3/18 + 4/18

6/18 - 3/18 + 4/18 = (6 - 3 + 4)/18:
(6 - 3 + 4)/18

6 + 4 = 10:
(10 - 3)/18

10 - 3 = 7:

Answer: 7/18

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