Oblicz:
a) 6,8 - 2,8 : ½
b) 3 ⅓ · 0,75 + 1 ¼
c) -3,8 : 1,9 - 0,9 · ( - 2 ⅔ )
6,8 - 2,8 / 1/2 = 4 / 1/2 = 2
b. 3 ⅓ * 3/4 + 1 ¼ = 10/3 * 3/4 + 1 ¼ = 30/12 + 1 ¼ = 15/6 + 1¼ = 5/3 + 1¼= 5/3 + 5/4= 20/12 + 15/12 = 35/12
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6,8 - 2,8 / 1/2 = 4 / 1/2 = 2
b. 3 ⅓ * 3/4 + 1 ¼ = 10/3 * 3/4 + 1 ¼ = 30/12 + 1 ¼ = 15/6 + 1¼ = 5/3 + 1¼= 5/3 + 5/4= 20/12 + 15/12 = 35/12