Предмет: Математика, автор: KakashiHatakee

С объяснением.Буду благодарен.​

Приложения:

Ответы

Автор ответа: privetetoa58
2

1

1) 2_5 - 4_5 = -2_5

2) 1870 - 5_22 = 1869 22_22 - 5_22 = 1869 17_22

3) 5 1_5 - 6 1_6 = 5 6_30 - 6 5_30 = -29_30

2

1) 9 * 4 1_3 = 9_1 * 13_3 = 39

2) 4 * -4.5 = -18

3) 4 / 0.4 = 10

3

1) 5.3 км = 5300 м

2) 32 см = 0.32 м (32/100)

4

1) 3.29 т = 3290 кг

2) 240 г = 0.24 кг (240/1000)

5

371 / 70 = 5.3

5.3 * 100 = 530  

6

2_х - 0.6_4 = 8_0.6 =  13 1_3

7

i = h*d

8

Прямоугольник  

9

 (5_6х - 1.1) * 0.8 = 5_6х - 1.98

 4_6х - 0.88  = 5_6х - 1.98

 1_6х= 1.1

 х = 1.1 / 1_6

х = 6 6_10

10  

  1)5_6 - 0.7 = 25_30 - 21_30 = 4_30 = 2_15

  2) 1.8 * 2_15 = 6_25

  3) 1 4_5 / 7.5 =  72_75

  4) 6_25 - 72_75 = -54_75

 11

  х - 0.3х - 4_9х = 253

  23_90х = 253

  х= 253/ 23_90

  х=990

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