3/4+9/20

Let's calculate:

\frac{3}{4} + \frac{9}{20}

ⓘ Add fractions by using a common denominator and then adding their numerators. We choose

20

, the least common multiple of

4

and

20

. Multiplying the numerator and the denominator by the same number does not change the fraction:

\frac{3}{4} + \frac{9}{20}

\frac{3 \times 5}{4 \times 5} + \frac{9}{20}

\frac{3 \times 5 + 9}{20}

\frac{3 \times 5 + 9}{20}

ⓘ Perform multiplications before additions and subtractions:

3 \times 5

15

\frac{15 + 9}{20}

ⓘ The numerator and the denominator are computed before the division:

15 + 9

24

\frac{24}{20}

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

4

, their greatest common divisor:

\frac{24}{20}

\frac{6 \times 4}{5 \times 4}

\frac{6}{5}

▶Result:

\frac{6}{5}

The numeric value of:

\frac{6}{5}

equals:

▷

1.2

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