Question

In the simplest form What is 4/7+1/3=

Answer 1

19/21

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 2

`(19)/(21)`

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:

`(4)/(7) * (3)/(3) = (12)/(21)`

Next, multiply 7 to both the numerator and denominator of 1/3:

`(1)/(3) * (7)/(7) = (7)/(21)`

Finally, add the numerators:

`(12)/(21) + (7)/(21) = (19)/(21)`

`(19)/(21)` is your answer.

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