Question

A) 5 8/13-6 7/13+1 5/13в) (14,65-7,95):5-0,715б) 18,27*4,63+18,27-5,37​

Answer 1

а) Сочетательное свойство алгебраического сложения:

= (5 8/13 + 1 5/13) - 6 7/13 = 6 13/13 - 6 7/13 = 6/13;

б) (14,65 - 7,95) : 5 - 0,715 = 0,625

1) 14,65 - 7,95 = 6,7

2) 6,7 : 5 = 1,34

3) 1,34 - 0,715 = 0,625;

в) Вынесение общего множителя за скобки:

= 18,27 · (4,63 + 1) - 5,37 = 97,4901

1) 4,63 + 1 = 5,63

2) 18,27 · 5,63 = 102,8601

3) 102,8601 - 5,37 = 97,4901.

Answer 2

Ответ:

Пошаговое объяснение:

a) 5 8/13-6 7/13+1 5/13=  6/13.

1)  5 8/13-6 7/13 = - (6 7/13- 5 8/13)=-(1  7/13-8/13)=-(20/13-8/13)=-12/13;

2)  -12/13 +1  5/13 = -12/13+18/13=  6/13.

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в) (14,65-7,95):5-0,715 = 0.625.

1)  14,65-7,95=6,7;

2)  6.7 : 5 = 1.34;

3)  1.34-0.715= 0.625.

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б) 18,27*4,63+18,27-5,37​= 97,4901.

1)  18,27*4,63=84,5901;

2)  84,5901+18.27=102,8601;

3)  102,8601-5,37=97,4901.

Answer 3

Let's solve each of the given mathematical expressions step by step:

A) 5 8/13 - 6 7/13 + 1 5/13

First, subtract the fractions: (8/13 - 7/13) = 1/13

Now, subtract the whole numbers: 5 - 6 + 1 = 0

So, the result of A) is 0.

B) (14.65 - 7.95) / 5 - 0.715

First, subtract the decimals: (14.65 - 7.95) = 6.7

Now, divide by 5: 6.7 / 5 = 1.34

Finally, subtract 0.715: 1.34 - 0.715 = 0.625

So, the result of B) is 0.625.

C) 18.27 * 4.63 + 18.27 - 5.37

First, multiply: 18.27 * 4.63 = 84.5891

Now, add 18.27: 84.5891 + 18.27 = 102.8591

Finally, subtract 5.37: 102.8591 - 5.37 = 97.4891

So, the result of C) is approximately 97.4891.