3 2 1 4
- 24,6 : ( - 2,35 + 0,7 : 2 1/3) - 15,36 = - 3,36
1) 7/10 : 7/3 = 3/10 = 0,3
2) - 2,35 + 0,3 = - 2,05
3) - 24,6 : (- 2,05) = 12
4) 12 - 15,36 = - 3,36
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2 1 3 4
(5 5/28 - 5 1/3 * 1,25 - 1 16/21) : (-1,5) =
1) 5 1/3 * 1,25 = 16/3 * 1 1/4 = 16/3 * 5/4 = 20/3
2) 5 5/28 - 20/3 = 145/28 - 20/3 = 3*145/84 - 28*20/84=
= 435/84 - 560/84 = - 125/84
3) - 125/84 - 1 16/21 = - 125/84 - 37/21 = - 125/84 - 37*4/84 =
= - 125/84 - 148/84 = - 273/84
4) - 273/84 : (-1 5/10) = 273/56 = 4 49/56 = 4 7/8