5 5/12+5/6 = 6 1/4
5/6 приводим к знаменателю 12 = 10/12
5 5/12+10/12 = 5 15/12 = 5 5/4 = 6 1/4
1 3/8+7 5/6 = 9 5/24
8/8+3/8 = 11/8
7 5/6 = 42/6+5/6 = 47/6
общий знаменатель - 24
11/8=33/24
47/6 = 188/24
33/24+188/24=221/24 = 9 5/24
5 4/5 - 3 1/5 = 2 3/5
4 3/11 - 5/22 = 4 6/22-5/22 = 4 1/22
8 7/8 - 4 5/6 = 8 21/24 - 4 20/24 = 4 1/24
3) 2 1/5+7/15 = 2 3/15+7/15 = 2 10/15 = 2 2/3
4 8/15+4/9 = 4 24/45+20/45 = 4 44/45
2 6/7-1/7 = 2 5/7
3 5/6 - 1 3/4 = 3 20/24 - 1 18/24 = 2 2/24 = 2 1/12
5 5/12 - 3 3/8 = 5 10/24 - 3 9/24 = 2 1/24
Пошаговое объяснение:
2) |1.2-3x| - |y| = |1.2-3*0.2| - |-0.6| = |1.2-0.6| - 0.6 = 0.6 - 0.6 = 0
3) 2|x| + |1-3x| = 2|1.2| + |1-3*1.2| = 2*1.2 + |1-3.6| = 2.4 + |-2.6| = 2.4+2.6 = 5
4) |4-5x| - 3|x| = |4-5*1.7| - 3|1.7| = |4-8.5|-3*1.7 = |-4.5| - 5.1 = 4.5 - 5.1 = -0.6
5) 7|-x|-4|3y-3.4| = 7|2| - 4|3*0.8-3.4| = 7*2 - 4|2.4-3.4| = 14 - 4|-1| = 14 - 4 = 10
6)3|x-1|-2|3-y| = 3|0.7-1|-2|3-1.7| = 3|-0.3|-2|1.3| = 3*0.3-2*1.3 = 0.9 - 2.6 = -1.7