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12 1/15 - 8 2/3=

Guest 13.09.2016

asinus · Answer 1 · 2016-09-13T09:04:55

12 1/15 - 8 2/3=

$12 \frac {1} {15}+8 \frac {2} {3} = \frac {12 \times 15 +1+8 \times 15 + 2 \times 5}{15}= \frac {311}{15}$ = $20 \frac {11}{15}$

Gast · Answer 2 · 2016-09-14T12:32:27

12 1/15 - 8 2/3 = 181/15 - 130/15 = 51/15 = 3 6/15 = 3 2/5

asinus · Answer 3 · 2016-09-14T11:32:02

Sorry!

12 1/15 - 8 2/3=

$12 \frac {1} {15}-8 \frac {2} {3} = \frac {12 \times 15 +1-8 \times 15 - 2 \times 5}{15}= \frac {51}{15}$ = $3 \frac {2}{5}$