Question

(7 - 1 5/12) ÷ 6,7 + (5,75 - 3 1/6) : 15,5​

Answer 1

Ответ:

1.

Пошаговое объяснение:

Вычислить:

(7 - 1 и 5/12) ÷ 6,7 + (5,75 - 3 и 1/6) : 15,5 =1

​1)7 - 1 и 5/12= 6 и 12/12 - 1 и 5/12=5 и 7/12;

2)5 и 7/12 : 6 и 7/10=

перевести в неправильную дробь:

=67/12 : 67/10=

=(67*10)/(12*67)=

=10/12=5/6;

3)5,75 - 3 и 1/6=

=5 и 3/4 - 3 и 1/6=

общий знаменатель 12:

=2 и (9-2)/12=

=2 и 7/12;

4)2 и 7/12 : 15,5=

=2 и 7/12 : 15 и 1/2=

перевести в неправильную дробь:

=31/12 : 31/2=

=(31*2)/(12*31)=

=2/12=1/6;

5)5/6+1/6=6/6=1.

Answer 2

Let's break down the expression step by step:

1. Start with the first part of the expression: $7 - \frac{15}{12}$. $7 - \frac{15}{12} = \frac{84}{12} - \frac{15}{12} = \frac{69}{12}$.

2. Divide the result from step 1 by 6.7: $\frac{69}{12} \div 6.7 \approx 10.2985$.

3. Move on to the second part of the expression: $5.75 - \frac{3}{6} - \frac{1}{6}$. $5.75 - \frac{3}{6} - \frac{1}{6} = 5.75 - \frac{4}{6} = 5.75 - \frac{2}{3}$.

4. Divide the result from step 3 by 15.5: $(5.75 - \frac{2}{3}) \div 15.5 \approx 0.3673$.

5. Add the results from steps 2 and 4: $10.2985 + 0.3673 \approx 10.6658$.

So, the result of the given expression is approximately $10.6658$.