Explicație pas cu pas:
a)
[tex] \frac{1}{2} \times \frac{12}{13} = \frac{ {2}^{2} \times 3}{2 \times 13} = \frac{2 \times 3}{13} = \frac{6}{13} [/tex]
b)
[tex] \frac{3}{4} \times \frac{120}{360} = \frac{3}{ {2}^{2} } \times \frac{ {2}^{3} \times 3 \times 5}{ {2}^{3} \times {3}^{2} \times 5} = \frac{ {2}^{3} \times {3}^{2} \times 5}{ {2}^{5} \times{3}^{2} \times 5} = \frac{1}{ {2}^{2} } = \frac{1}{4} [/tex]
c)
[tex] \frac{5}{17} \times \frac{153}{250} = \frac{5}{17} \times \frac{{3}^{2} \times 17}{2 \times {5}^{3} } = \frac{ {3}^{2} \times 5 \times 17}{ 2 \times {5}^{3} \times 17} = \frac{ {3}^{2} }{2 \times {5}^{2} } = \frac{9}{50} [/tex]
