Question

7v......14o......182kg
10v......7o......156

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Plssss dau coroana​

Answer 1

Răspuns:

Explicație pas cu pas:

7 vaci ......14 oi ---------182 kg

10 vaci.....7  oi ---------156 kg    I ·2  =>

7 vaci......14 oi---------182kg  (1)

20 vaci....14 oi ............312 kg  (2)

(2)-(1) =>

20-7 vaci ............312-182 kg

13 vaci .................130 kg

1 vaca .........130:13 kg

1 vaca mamanca= 10 kg

Inlocuim in a doua relatie :

10x10 kg .......7 oi ........156 kg

100 kg + 7 oi = 156 kg

7 oi = 156-100 kg

7 oi = 56 kg

1 oaie = 56:7 kg

1 oaie mananca = 8 kg

Answer 2

7 v.........14 o.......182 kg

10 v.........7 o........156 kg | × 2

7 v.........14 o.......182 kg

20 v........14 o........312 kg

13 v........-------........130 kg

1 v.......130 : 13 = 10 kg

7 × 10 = 70 kg........14 o.......182 kg

14 o........182 - 70 = 112 kg

1 o........112 : 14 = 8 kg