3 1/3* 0,3 +19:0,5*1/4 Я знаю что ответ 10,5 Но я хочу решение по действиям. Created by 1526962. matematika-ru

4 Я знаю что ответ 10,5 Но я хочу решение по действиям...

vmaluga2011

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3 1/3*0,3+19:0,5*1/4=10,5
1) 3 1/3*0,3=10/3*3/10=1
2) 19:0,5=38
3) 38*1/4=38:4=9,5
4) 1+9,5=10,5

4 votes Thanks 5

namesmark

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3 1/3 * 0,3 + 19/0,5 * 1/4 =

10/3 * 3/10 + 19/(0,5*4) =
1 + 19/2 =
1 + 9,5 =
10,5

Пояснение: 10/3 * 3/10 - взаимно обратные, их произведение равно единице.

2 votes Thanks 2

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