How can a fraction be rewritten as an equivalent fraction with a specific denominator? A. Add the numerator and the denominator by the desired denominator. B. Subtract the numerator and the denominator by the desired denominator. C. Multiply or divide the numerator and the denominator by the desired denominator. D. Multiply or divide the numerator and the denominator by the same nonzero number such that the desired denominator is obtained.
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a. To add (or subtract) fractions that have the same _______ denominator, add (or subtract) their and write the sum (or difference) over the _______ denominator _______ the result, if possible. b. To add (or subtract) fractions that have different denominators, we express each fraction as an equivalent fraction that has the _______ for its denominator. Then we use the rule for adding (subtracting) fractions that have the _______ denominator.
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In a fraction, if the numerator is decreased by 1 and the denominator is increased by 1 , then the resulting fraction is $\frac{1}{4}$. Instead, if the numerator is increased by 1 and the denominator is decreased by 1 , then the resulting fraction is $\frac{2}{3}$. Find the difference of the numerator and the denominator of the fraction. (1) 2 (2) 3 (3) 4 (4) 5
the fractions a common denominator and then dividing the numerators. 13. a. By rewriting the division problem 18/33 ÷ 9/11 = ? as a multiplication problem with an unknown factor, explain why it is valid to divide the fractions as follows: 18/33 ÷ 9/11 = (18 ÷ 9)/(33 ÷ 11) = 2/3 b. Give an example of a numerical fraction division problem that can be made easy to solve by using the method of dividing the numerators and dividing the denominators that is demonstrated in part (a). 14. Use the fact that we can rewrite the division problem 7/10 ÷ 2/3 = ? as a multiplication problem with an unknown factor to explain in your own words why the division problem can be solved by multiplying 7/10 by 3/2.
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