Question

0.75+(1 2/5*3/14-0.2):2/5

Answer 1

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Answer 2

0,75+(1 2/5*3/14-0,2):2/5
3/4+(7/5*3/14-1/5)*5/2=3/4+(1/5*3/2-1/5)*5/2=3/4+(3/10-1/5)*5/2=3/4+1/10*5/2=3/4+1/2*1/2=3/4+1/4=1

Answer 3

To solve the given expression, follow the order of operations (PEMDAS/BODMAS):

P: Parentheses first E: Exponents (none in this expression) MD: Multiplication and Division (from left to right) AS: Addition and Subtraction (from left to right)

Let's break down the expression step by step:

1. Calculate the expression inside the parentheses: 1 2/5 * 3/14 - 0.2

1 2/5 can be converted to an improper fraction: (5 + 2) / 5 = 7/5 So the expression inside the parentheses becomes: 7/5 * 3/14 - 0.2

2. Perform multiplication and division (from left to right): 7/5 * 3/14 = (7 * 3) / (5 * 14) = 21 / 70 = 3 / 10

3. Now the expression becomes: 3/10 - 0.2

4. Perform subtraction: 3/10 - 0.2 = (3 - 0.2 * 10) / 10 = (3 - 2) / 10 = 1 / 10

5. Finally, perform addition: 0.75 + (1 / 10) = (7 / 10) + (1 / 10) = 8 / 10 = 4 / 5

So the final answer is 4/5.