(1 / 8 minus 5 / 6) △ 1 / 24 minus 12 × (5 / 2 minus 1 / 2)

(1 / 8 minus 5 / 6) △ 1 / 24 minus 12 × (5 / 2 minus 1 / 2)

(1/8-5/6)*24-12*(1/2-5/2)
=1/8*24-5/6*24-12*1/2+12*5/2
=3-20-6+30
=7

Eight out of fifteen divided by two out of nine divided by three out of five

8/15÷2/9÷3/5 =8/15 ×9/2×3/5 =36/25

0.6 = percentage 15 = () divided by 30 = percentage 3: ()

9 18 60 5

3 divided by () = 30 parts () = 0.6 = (): 15 = ()%

3 divided by (5) = 30 (50) = 0.6 = (9): 15 = (60)%

(x + 7) divided by 1 / 5
＝6．4

(x + 7) divided by 1 / 5
=(x + 7) times 5
=5X+7*5
=5X+35

One divided by x = 5 / 7
Fast

1 △ x = 5 / 7
X = 1 △ 5 / 7
X = 7 / 5

X divided by two seventh equals five fourths

X divided by two seventh equals five fourths
X = 5 / 14 * 2 / 7
X = 5 / 49

4 / 5 × 7 divided by 1 / 5 × 7

4 / 5 × 7 divided by 1 / 5 × 7
=(4 / 5 ／ 1 / 5) × (7 × 7)
=4×49
=196

367 times 873 of 875. Simple algorithm

367 times 873 out of 875
=367x(875-2)/875
=367x(1-2/875)
=367-734/875
=366 141 / 875

A simple algorithm of 4 / 5 times 1 / 4 times 1 / 4 times 4,

Four out of five times one out of four times one out of four times four
=(4 / 5 by 1 / 4) by (1 / 4 by 4)
=1 / 5 × 1
=1 / 5