Question

найдите значения выражения (а) 3-(37- 1235 ) :67 ; (б) 12 -34 * (715-310);( 6 класс)

Answer 1

3-(37- 1235 ) :67 = 2 14/15
1) 3/7 - 13/35 = 15/35 - 13/35 = 2/35
2) 2/35 : 6/7 = 2/35 : 30/35 = 1/15
3) 3 - 1/15 = 2 15/15 - 1/15 = 2 14/15


12 -34 * (715-310) = 3/8
1) 7/15 - 3/10 = 14/30 - 9/30 = 5/30 = 1/6
2) 3/4 * 1/6 = 9/12 * 2/12 = 9/72 = 1/8
3) 1/2 - 1/8 = 4/8 - 1/8 = 3/8

Answer 2

спасиба за пример