Question

Выполните действие.7-3/5+2 7/9

Answer 1

7 - 3/5 + 27/9
7 - 3/5 + 3
7 + 3 - 3/5
10 - 3/5 = 9 целых 2/3

Answer 2

To solve the expression 7 - 3/5 + 2 + 7/9, we can follow the order of operations (PEMDAS/BODMAS) and perform the calculations step by step.

Step 1: Division

First, let's simplify the division operations: - 3 divided by 5 is 3/5. - 7 divided by 9 is 7/9.

Step 2: Addition and Subtraction

Next, let's perform the addition and subtraction operations in the given expression: - 7 - 3/5 + 2 + 7/9

To add or subtract fractions, we need to find a common denominator. In this case, the common denominator is 45.

- 7 - 3/5 + 2 + 7/9 - 35/5 - 3/5 + 2 + 35/9 (converting whole numbers to fractions with a denominator of 1) - (35 - 3)/5 + 2 + 35/9 (finding a common denominator) - 32/5 + 2 + 35/9 (subtracting the fractions) - (32/5) * (9/9) + 2 + (35/9) * (5/5) (finding a common denominator) - (32 * 9)/(5 * 9) + 2 + (35 * 5)/(9 * 5) (multiplying the numerators and denominators) - 288/45 + 2 + 175/45 (simplifying the fractions) - (288 + 175)/45 + 2 (adding the fractions) - 463/45 + 2 (simplifying the fraction)

Now, let's add the fractions and simplify the expression further: - (463 + 90)/45 (finding a common denominator) - 553/45 (simplifying the fraction)

Therefore, the result of the expression 7 - 3/5 + 2 + 7/9 is 553/45.

Please note that the answer is provided in fraction form, as the original expression contained fractions.