Question

13 13 5 8 1 1 1) (1 8 × 42 + 5 7 : 21 ):(8 8 +3 2)матем 5 класс​

Answer 1

Ответ:

18×42+57:21=758

88+32=120

(1 8 × 42 + 5 7 : 21 ):(8 8 +3 2)=758+120=878

(878)

Answer 2

Ответ:

6,3225

Пошаговое объяснение:

1)18х42=756

2)57:21=2.7

3)756+2.7=758.7

4)88+32=120

5)758.7:120=6,3225

Answer 3

To solve the mathematical expression you provided, let's break it down step by step:

1. Start by evaluating the expression inside the parentheses: 1 8 × 42 + 5 7 : 21. To do this, we first need to convert the mixed numbers into improper fractions: 1 8 = (1 × 8) + 8 = 8 + 8 = 16/8 5 7 = (5 × 7) + 7 = 35 + 7 = 42/7

   Now we have: (16/8 × 42/1) + (42/7 : 21)

2. Perform the multiplications and divisions from left to right: (16/8 × 42/1) = (2 × 42) = 84

   (42/7 : 21) = (6/1 : 21) = 6/21 = 2/7

   Now we have: 84 + 2/7

3. Convert the fraction to have a common denominator: 2/7 = (2 × 1)/(7 × 1) = 2/7

   Now we have: 84 + 2/7

4. Add the whole number and the fraction: 84 + 2/7 = 588/7 + 2/7 = (588 + 2)/7 = 590/7

Therefore, the simplified form of the expression is 590/7.