Выполните действие 2/11+5/11; 1/8+4/8; 6/15-4/15; - вопрос №34454632115111848615415113325392949 от maksim22441 31.01.2020 15:50

Question

Математика: Выполните действие 2/11+5/11; 1/8+4/8; 6/15-4/15; 11/3-3/25; 3/9+2/9-4/9; 5/18+12/18-9/18; 12/19-1/19-5/19; 25/23-10/23+3/23.

maksim22441 · Answer

2/11 + 5/11 = 7/111/8 + 4/8 = 5/86/15 - 4/15 = 2/1511/3 - 3/25 = (25*11 - 3*3)/75 = (275-9)/75 = 266/753/9+2/9-4/9 =1/95/18+12/18-9/18 = 8/18 = 4/912/19-1/19-5/19 = 6/1925/23-10/23+3/23 = 18/23...