Question

What is the sum of 3/4 and 4/5?​

Answer 1

Answer:

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Question

what is the sum of 3/4 and 4/5?​

Answer

$1\frac{11}{20}$

Step-by-step explanation:

$\frac{3}{4} +\frac{4}{5} = ?$

The fractions have unlike denominators. First, find the Least Common Denominator and rewrite the fractions with the common denominator.

LCD(3/4, 4/5) = 20

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.

$(\frac{3}{4~} x~\frac{5}{5} )+ (\frac{4}{5} ~x~\frac{4}{4}) = ?$

Complete the multiplication and the equation becomes

$\frac{15}{20} +\frac{16}{20} = ?$

The two fractions now have like denominators so you can add the numerators.

Then:

15 + 16 = 31

20  =    20

$\frac{31}{20}$ is the same as  31 ÷ 20

Convert to a mixed number using

long division for 31 ÷ 20 = 1R11, so

The Answer is $1\frac{11}{20}$

Answer 2

Answer:

your answer is 1.5

Step-by-step explanation:

3/4 simpified is 0.75 + 4/5 simplied is 0.8

0.75+0.8=1.5