Question

1)-1 1/14*2 1/3; 2)1 1/7:(-2 2/7); 3)23 6+(14,6-30,1)-(6,8+1,9); 4)(-3,9*2,8+26,6):(-3,2)-2,1; Решить

Answer 1

1)-11/14*21/3 сокращаем 14 и 21 на 7, получается -11/2 далее -5 1/2 переводим
Ответ -5,5
2) переводим, получаем 11/7 *7/16 , далее 11*1/16
Ответ 11/16 или , если перевести 0,6875
3) какой знак стоит между 23 и 6, напишите в комментариях и я решу
4) ответ: -7 просто решаешь по действиям

Answer 2

To solve the given expressions, we'll perform the calculations step by step:

1. (-1 1/14) * (2 1/3): First, convert the mixed numbers into improper fractions: -1 1/14 = -15/14 2 1/3 = 7/3

Now, perform the multiplication: (-15/14) * (7/3) = (-15 * 7) / (14 * 3) = -105 / 42

Next, simplify the fraction: -105 / 42 = -5/2

2. 1 1/7 ÷ (-2 2/7): Again, convert the mixed numbers into improper fractions: 1 1/7 = 8/7 -2 2/7 = -16/7

Now, perform the division: (8/7) ÷ (-16/7) = (8/7) * (-7/16) = -1/2

3. 23 6 + (14.6 - 30.1) - (6.8 + 1.9): Simply perform the operations inside the parentheses first: 23 6 + (-15.5) - (8.7)

Now, perform the additions and subtractions: 23 + 6 - 15.5 - 8.7 = 20.8

4. (-3.9 * 2.8 + 26.6) / (-3.2) - 2.1: Perform the multiplication and addition inside the parentheses: (-3.9 * 2.8 + 26.6) = (-10.92 + 26.6) = 15.68

Now, perform the division and subtraction: (15.68 / -3.2) - 2.1 = -4.9 - 2.1 = -7

So, the solutions to the given expressions are:

1. -5/2
2. -1/2
3. 20.8
4. -7