Question

(0.7+0.2+1 2/5)*1/2+1пожалуйста решите​

Answer 1

Ответ:

В приложении

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Answer 2

To solve the expression, let's follow the order of operations (PEMDAS/BODMAS):

1. Parentheses/Brackets
2. Exponents/Orders
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)

The given expression is: (0.7 + 0.2 + 1 2/5) * 1/2 + 1

Step 1: Evaluate the expression inside the parentheses first. 1 2/5 is equal to 1 + 2/5, which is equal to 7/5. So the expression becomes: (0.7 + 0.2 + 7/5) * 1/2 + 1

Step 2: Perform addition inside the parentheses. 0.7 + 0.2 + 7/5 = 0.9 + 7/5

Step 3: Find a common denominator to add the fractions. The common denominator for 5 and 2 is 10. So, we need to convert 0.9 to have a denominator of 10: 0.9 = 9/10

Now, the expression becomes: (9/10 + 7/5) * 1/2 + 1

Step 4: Add the fractions inside the parentheses. To add 9/10 and 7/5, we need to convert 9/10 to have a denominator of 5: 9/10 = 9/10 * 1 = 9/10 * 2/2 = 18/20

Now, the expression becomes: (18/20 + 7/5) * 1/2 + 1

Step 5: Add the fractions inside the parentheses again. 18/20 + 7/5 = (18 + 28) / 20 = 46/20 = 23/10

Now, the expression becomes: (23/10) * 1/2 + 1

Step 6: Perform multiplication. (23/10) * 1/2 = 23/20

Now, the expression becomes: 23/20 + 1

Step 7: Find a common denominator to add the fractions. The common denominator for 20 and 1 is 20. So, we need to convert 1 to have a denominator of 20: 1 = 20/20

Now, the expression becomes: 23/20 + 20/20

Step 8: Add the fractions. 23/20 + 20/20 = (23 + 20) / 20 = 43/20

The final result is 43/20.