To subtract fractions, the denominators (bottom numbers) must be equal; so first convert the fractions into equivalent fractions with the same denominator. Then the numerators (top numbers) are subtracted and the resulting fraction simplified:
2/9 - 5/6 = 4/18 - 15/18
= -11/18
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6 over 7 minus 5 over 7 is 1 over 7.
5/6 - 1/6 = 5-1/6 = 4/6 = 2x2/3x2 = 2/3
5 − 1/6 = 45/6
5/6 minus 4/15 = 17/30
3/5 - 1/10 --> 6/10 - 1/10 = 5/10 = 1/2.