Решите уравнение надо (дроби) 4/15 y = 2/5 7/8 y = 14 9/10 y = 4 1/2 (1/4+1/5) х = 1 4/5 (2 1/12 - 1 5/6) х = 3/4
251
316
Ответы на вопрос:
1)14/15 у = 2/5
у = 2/5 : 4/15
у = 3/2 = 1целая 1/2
2)7/8у = 14
у = 14 : 7/8
у= 16
3)9/10у = 9/2
у = 9/2 : 9/10
у= 5
4)(1/4 + 1/5)х = 9/5
(5/20 + 4/20)х = 9/5
9/20х = 9/5
х= 9/5 : 9/20 = 4
5) (25/12 - 22/12)х = 3/4
1/4х = 3/4
х = 3/4 : 1/4
х = 3
(1/4+1/5) х = 1 4/5(5+4)x/20 = 9/59x/20 = 9/59x = 20*9/59x = 4*9x = 4*9/9x = 4 (2 1/12 - 1 5/6) х = 3/4(25/12 - 11/6)x = 3/4 (25 - 22)x/12 = 3/4 3x/12 = 3/4 3x = 12*3/4 3x = 9 x = 3 4/15 y = 2/54y/15 = 2/5 4y = 15*2/5 4y = 6 y = 1.5 7/8 y = 14 7y/8 = 14 7y = 14*8 y = 14*8/7 y = 16 9/10 y = 4 1/2 9y/10 = 9/2 9y = 9*10/2 9y = 45 y = 45/9 y = 5
Популярно: Математика
-
холера66303.04.2020 08:02
-
linakovtunenko113.07.2020 11:17
-
hope90328.06.2020 07:28
-
iro4ka050528.08.2021 21:30
-
Lizamog116.08.2020 20:13
-
Лиопольд26.12.2020 10:50
-
srochno628.06.2023 16:43
-
итимиотмсморввш17.11.2022 16:04
-
LinaKosarchuk21.12.2022 05:26
-
anastasiya25819.05.2023 08:03