1. 6 * 20 + 7 * 12/3 * 20 - 4 * 12 = 120 + 84/60 - 48 = 204/12 = 17
2. 6 * 10 + 7 * 6/3 * 10 - 4 * 6 = 60 + 24/30 - 24 = 102/6 = 17
3. 6 * 2,4 + 7 * 0,8/3 *2,4 - 4 * 0,8 = 14,4 + 5,6/7,2 - 3,2 = 20/4 = 5
4. хз
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Answers & Comments
1. 6 * 20 + 7 * 12/3 * 20 - 4 * 12 = 120 + 84/60 - 48 = 204/12 = 17
2. 6 * 10 + 7 * 6/3 * 10 - 4 * 6 = 60 + 24/30 - 24 = 102/6 = 17
3. 6 * 2,4 + 7 * 0,8/3 *2,4 - 4 * 0,8 = 14,4 + 5,6/7,2 - 3,2 = 20/4 = 5
4. хз