18 8/15 + 13 11/20 + 21 1/9 — step-by-step solution

⚠ 18 8/15 is read as the mixed number 18 + 8/15

⚠ 13 11/20 is read as the mixed number 13 + 11/20

Let's evaluate:

18

+ \frac{8}{15}

+ 13

+ \frac{11}{20}

+ 21

+ \frac{1}{9}

31

+ \frac{8}{15}

+ \frac{11}{20}

+ 21

+ \frac{1}{9}

52

+ \frac{8}{15}

+ \frac{11}{20}

+ \frac{1}{9}

52 + \frac{8 \times 4 + 11 \times 3}{15 \times 4} + \frac{1}{9}

52 + \frac{32 + 33}{60} + \frac{1}{9}

52 + \frac{65}{60} + \frac{1}{9}

52 + \frac{65 \times 3 + 20}{60 \times 3}

52 + \frac{195 + 20}{180}

52 + \frac{215}{180}

52 + \frac{43}{36}

ⓘThe fraction

\frac{43}{36}

is greater than 1: add its integer part

1

to the whole part:

\frac{43}{36} + 52

53 + \frac{7}{36}

▶Result:

53

\frac{7}{36}

The numeric value of:

53 + \frac{7}{36}

is:

53 + \approx 0.1944

▷

\approx 53.1944