Question

4,75: 1,25 0,5 + 2,05+(2,88: 3,2 + 4,75)0,5+0,63 · 10 - 3,8: 0,8​

Answer 1

Решение:

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4,75÷1,25×0,5+2,05=3,95

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1) 475/100×100/125= 19/5=3,8

2) 3,8×0,5=19/5×1/2=19/10=1,9

3) 1,9+2,05=3,95

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(2,88÷3,2+4,75)×0,5=37,5

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1) 2,88÷3,2=288/100×10/32=90

2)90+4,75=94,75

3) 94,75×0,5=9475/100×1/2=47,375

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0,63×10-3,8÷0,8=1,55

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1) 0,63×10=6,3

2) 3,8÷0,8=38/10×10/8=19/4=4,75

3) 6,3-19/4=630/100-475/100=1,55

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3,95 + 37,5 + 1,55 = 5,5 + 37,5 = 43

Ответ: 43

Answer 2

To solve this expression, we'll follow the order of operations (PEMDAS/BODMAS) which stands for Parentheses/Brackets, Exponents/Orders (i.e., powers and square roots, etc.), Multiplication and Division (left-to-right), and Addition and Subtraction (left-to-right).

The given expression is:

4.75 ÷ 1.25 + 0.5 + 2.05 + (2.88 ÷ 3.2 + 4.75) × 0.5 + 0.63 × 10 - 3.8 ÷ 0.8

Now, let's solve it step by step:

1. Inside the parentheses:

   2.88 ÷ 3.2 = 0.9

   So, the expression now becomes:

   4.75 ÷ 1.25 + 0.5 + 2.05 + (0.9 + 4.75) × 0.5 + 0.63 × 10 - 3.8 ÷ 0.8

2. Inside the second set of parentheses:

   0.9 + 4.75 = 5.65

   The expression becomes:

   4.75 ÷ 1.25 + 0.5 + 2.05 + 5.65 × 0.5 + 0.63 × 10 - 3.8 ÷ 0.8

3. Perform the multiplications and divisions from left to right:

   a. 4.75 ÷ 1.25 = 3.8

   The expression becomes:

   3.8 + 0.5 + 2.05 + 5.65 × 0.5 + 0.63 × 10 - 3.8 ÷ 0.8

   b. 5.65 × 0.5 = 2.825

   The expression becomes:

   3.8 + 0.5 + 2.05 + 2.825 + 0.63 × 10 - 3.8 ÷ 0.8

   c. 0.63 × 10 = 6.3

   The expression becomes:

   3.8 + 0.5 + 2.05 + 2.825 + 6.3 - 3.8 ÷ 0.8

4. Finally, perform the remaining additions and divisions from left to right:

   a. 3.8 + 0.5 = 4.3

   The expression becomes:

   4.3 + 2.05 + 2.825 + 6.3 - 3.8 ÷ 0.8

   b. 4.3 + 2.05 = 6.35

   The expression becomes:

   6.35 + 2.825 + 6.3 - 3.8 ÷ 0.8

   c. 3.8 ÷ 0.8 = 4.75

   The final expression is:

   6.35 + 2.825 + 6.3 - 4.75

5. Now, perform the remaining additions and subtractions from left to right:

   a. 6.35 + 2.825 = 9.175

   The final expression becomes:

   9.175 + 6.3 - 4.75

   b. 9.175 + 6.3 = 15.475

   The final expression becomes:

   15.475 - 4.75

6. Finally, subtract 4.75 from 15.475:

   15.475 - 4.75 = 10.725

So, the final result of the given expression is approximately 10.725.