Question

5а-3а/4а² при а 1/300 ,разбор ответа

Answer 1

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Answer 2

To solve the expression 5а - 3а/4а² when а = 1/300, follow these steps:

Step 1: Substitute the value of а into the expression. Step 2: Perform the operations in the correct order (first division, then subtraction).

Let's calculate it step by step:

Step 1: Substitute а = 1/300 into the expression: 5(1/300) - 3(1/300) / 4(1/300)²

Step 2: Now, perform the operations in the correct order (division first, then subtraction): = (5/300 - 3/300) / (4/90000)

Step 3: Now, find a common denominator for both fractions in the numerator: = (2/300) / (4/90000)

Step 4: To divide fractions, multiply the first fraction by the reciprocal of the second fraction: = (2/300) * (90000/4)

Step 5: Simplify the fractions: = (2 * 90000) / (300 * 4)

Step 6: Perform the multiplication in the numerator: = 180000 / 1200

Step 7: Simplify the fraction: = 150

The final result is 150.