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8 - 2 ½ = 7 2/2 - 2 1/2 = 5 1/2
1 ⅓ x 2⅖ = 4/3 * 12/5 = 16/5 = 3 1/5
1 ½ : 9 = 3/2 * 1/9 = 1/6
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g) ²₁₅ x 0,75 = 2/15 * 3/4 = 1/10 = 0,1
h)1³₇ x 0,056 = 10/7 * 56/1000 = 8/100 = 0,08
i)2,4 x 1 ¼ = 24/10 * 5/4 = 6/2 = 3
j) 2⁵₆ : 3,5 =17/6 * 10/35 = 85/35 = 2 15/35 = 2 3/7
k) 4,67 - ( 3⅓ - ⅚ ) = 4,67 - (3 2/6 - 5/6 ) = 4,67 - 15/6 = 4,67 - 25 = 2,14
l) 2,4 x 1¼ - ⅔ x 0,75 = 2,4 * 1,25 - 2/3 * 3/4 = 3 - 0,5 = 2,5
m) 3,6 : ⅗ - (1⅕) ² = 36/10 * 5/3 - (6/5)^2 = 12/2 - 36/25 = 6 - 1,44 = 4,56
n) (4,56 - 1,16) x ( 14 x ⁵₇ - 9,99) = (3,4) * (14/1 * 5/7 - 9,99) = 3,4 * (10 - 9,99) = 3,4 *0,01 = 0,034
o) 0,2 x ( 5⅕ - 3,7) - 0,06 = 0,2 * (5 1/5 - 37/10 ) - 0,06 = 0,2 * (52/10 - 37/10) - 0,06 = 0,2 * 1,5 - 0,06 = 0,3 - 0,06 = 0,24