Answer:
19/21
Step-by-step explanation:
47+13=?
The fractions have unlike denominators. First, find the Least Common Denominator and rewrite the fractions with the common denominator.
LCD(4/7, 1/3) = 21
Multiply both the numerator and denominator of each fraction by the number that makes its denominator equal the LCD. This is basically multiplying each fraction by 1.
(47×33)+(13×77)=?
Complete the multiplication and the equation becomes
1221+721=?
The two fractions now have like denominators so you can add the numerators.
Then:
12+721=1921
This fraction cannot be reduced.
Therefore:
47+13=1921
Solution by Formulas
Apply the fractions formula for addition, to
47+13
and solve
(4×3)+(1×7)7×3
=12+721
=1921
Therefore:
47+13=1921
Answer:
[tex]\frac{19}{21} [/tex]
Step-by-step explanation:
First, find common denominators. Note that what you do to the denominator, you must also do to the numerator.
In this case, the common denominator will be 21.
Multiply 3 to both the numerator and denominator of 4/7:
[tex]\frac{4}{7} * \frac{3}{3} = \frac{12}{21} [/tex]
Next, multiply 7 to both the numerator and denominator of 1/3:
[tex]\frac{1}{3} * \frac{7}{7} = \frac{7}{21} [/tex]
Finally, add the numerators:
[tex]\frac{12}{21} + \frac{7}{21} = \frac{19}{21} [/tex]
[tex]\frac{19}{21} [/tex] is your answer.
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