Question

7/8 : 3+(6/7-0,5)•3,4= ?

Answer 1

Объяснение:

$\frac{7}{8}:3+(\frac{6}{7}-0,5)\cdot 3,4=\frac{7}{8\cdot 3}+(\frac{6}{7}-\frac{1}{2})\cdot 3\frac{2}{5}=\frac{7}{24}+\frac{12-7}{14}\cdot \frac{17}{5}=\\\\=\frac{7}{24}+\frac{5}{14}\cdot \frac{17}{5}=\frac{7}{24}+\frac{17}{14}=\frac{49+204}{2\cdot 12\cdot 7}=\frac{253}{168}=1\frac{85}{168}$

Answer 2

Объяснение:

7/8:3+(6/7-0,5)•3,4=7/8*1/3+(6/7-1/2)*17/5=7/24+5/14*17/5 = 7/24 +1/14 *17 = 7/24 +17/14=253/168=1 85/168

Answer 3

Let's solve the expression step-by-step:

1. Start with the innermost parentheses: (6/7 - 0.5) (6/7 - 0.5) = (6/7 - 0.5) = (6/7 - 3/6) = (6/7 - 21/42) = (6/7 - 1/2) = (12/14 - 7/14) = 5/14

2. Now, multiply the result from step 1 by 3.4: 3.4 * (6/7 - 0.5) = 3.4 * (5/14) = 3.4 * 5 / 14 = 17/14

3. Next, add 3 to the result: 17/14 + 3 = (17 + 42) / 14 = 59/14

4. Finally, divide 7 by 8: 59/14 ÷ 3 = 59/14 * 1/3 = 59/42 ≈ 1.40476

So, the value of the expression is approximately 1.40476.