Предмет: Математика, автор: Isla23

4. Реши уравнение 14 + 6,2а + 2,4а = 69,9.


nastena89qa: 14+6,2а+2,4а=69,9;
6,2а+2,4а=69,9-14;
8,6а=55,9;
а=55,9/8,6;
а=6,5;
Ответ: 6,5.

Ответы

Автор ответа: ribals
2

14 + 6,2а + 2,4а = 69,9

14 + 8,6а = 69,9

8,6а = 69,9 - 14

8,6а = 55,9

а = 55,9 : 8,6

а = 6,5

Ответ: 6,5

Автор ответа: nastasitnik39
0

Відповідь:

Покрокове пояснення:

14+6,2а+2,4а=69,9

6,2а+2,4а=69,9-14

8,6а=55,9

а=55,9:8,6

а=6,5

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