15 11/20 + 12 1/10 + 2 7/20

⚠ 15 11/20 is read as the mixed number 15 + 11/20■12 1/10 is read as the mixed number 12 + 1/10■2 7/20 is read as the mixed number 2 + 7/20

Let's evaluate:

15

+ \frac{11}{20}

+ 12

+ \frac{1}{10}

+ 2

+ \frac{7}{20}

ⓘ Start from

15

and move forward

12

on the number line:

15 + 12

27

■Add fractions by using a common denominator and then adding their numerators:

\frac{11}{20} + \frac{1}{10}

\frac{11 + 2}{20}

27

+ \frac{11 + 2}{20}

+ 2

+ \frac{7}{20}

ⓘ Calculate the numerator and denominator before dividing:

11 + 2

13

27

+ \frac{13}{20}

+ 2

+ \frac{7}{20}

ⓘ Start from

27

and move forward

2

on the number line:

27 + 2

29

■Add fractions by using a common denominator and then adding their numerators:

\frac{13}{20} + \frac{7}{20}

\frac{13 + 7}{20}

29 + \frac{13 + 7}{20}

ⓘ Calculate the numerator and denominator before dividing:

13 + 7

20

29 + \frac{20}{20}

ⓘ We simplify the fraction by dividing the numerator and the denominator by

20

, their greatest common divisor:

\frac{20}{20}

1

29 + 1

ⓘ Start from

29

and move forward

1

on the number line:

29 + 1

30

▶Result:

30

100% free