Читать книгу Algebra I All-in-One For Dummies - Mary Jane Sterling, Mary Sterling Jane - Страница 97

1 0.1. Multiply the first two numbers; then divide the result by the third.

2 . Multiply both the numerator and denominator by 6.

3 . The fractions have no common denominator, so you multiply the first fraction by and the second fraction by .

4 . Dividing the denominator into the numerator, you get a repeating decimal.

5 . Both denominators are divisible by 3. Divide to get . The fraction on the right can be reduced by dividing each number by 4. . Now, when you cross-multiply, you have .

6 . Put the repeating digits, 27, over 99 in a fraction and reduce. .

7 . Multiply the first fraction by and the second fraction by .

8 . Multiply the first two fractions. Then divide the result by the third fraction.

9 . Multiply the whole number 3 times the denominator 4 and add the numerator.

10 .

11 . Both the numerator and denominator are divisible by 30. Divide and write the results in the corresponding positions.

12 5.325951. Add the first two numbers and then subtract the third from the result.

13 . Put 125 over 1,000 in a fraction and reduce.

14 . Divide 7 into 25. The remainder goes in the numerator.

15 . Write the three fractions with their least common denominator, 12. . Now, add the first two fractions and subtract the third.