What is 12/20 \times 15/25 ?

The solution to 12/20 \times 15/25 is 9/25

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simplify 12/20 \times 15/25

simplify

\frac{12}{20} \cdot \frac{15}{25}

\frac{9}{25}

Decimal Notation

0.36

Solution steps

\frac{12}{20} \cdot \frac{15}{25}

Cancel

\frac{12}{20} : \frac{3}{5}

\frac{12}{20}

Factor the number:

12 = 4 \cdot 3

= \frac{4 \cdot 3}{20}

Factor the number:

20 = 4 \cdot 5

= \frac{4 \cdot 3}{4 \cdot 5}

Cancel the common factor:

4

= \frac{3}{5}

= \frac{3}{5} \cdot \frac{15}{25}

Cancel

\frac{15}{25} : \frac{3}{5}

\frac{15}{25}

Factor the number:

15 = 5 \cdot 3

= \frac{5 \cdot 3}{25}

Factor the number:

25 = 5 \cdot 5

= \frac{5 \cdot 3}{5 \cdot 5}

Cancel the common factor:

5

= \frac{3}{5}

= \frac{3}{5} \cdot \frac{3}{5}

\frac{3}{5} \cdot \frac{3}{5} = \frac{9}{25}

\frac{3}{5} \cdot \frac{3}{5}

Apply the fraction rule:

\frac{a}{b} \cdot \frac{c}{d} = \frac{a \cdot c}{b \cdot d}

= \frac{3 \cdot 3}{5 \cdot 5}

Multiply the numbers:

3 \cdot 3 = 9

= \frac{9}{5 \cdot 5}

Multiply the numbers:

5 \cdot 5 = 25

= \frac{9}{25}

= \frac{9}{25}

(10 + 1 + 5) \div 8 + (80 + 40) \div 60

16 - 4 \cdot 29

\frac{33 \cdot 9 - 33 \cdot 3}{99 \cdot 18}

(- 3) - (+ 7) + (- 8) - (- 4)

2 - 3 \times 2 + (- 5)