Question

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Answer 1

$\frac{56}{91} = \frac{8}{13}$

$\frac{65}{125} = \frac{13}{25}$

$\frac{121}{165} = \frac{11}{15}$

$\frac{16\cdot10\cdot18}{70\cdot12\cdot24} = \frac{1}{7}$

$\frac{15\cdot35\cdot21}{75\cdot49\cdot14} = \frac{3}{14}$

$\frac{8\cdot7+5\cdot7-2\cdot7}{121} = \frac{7(8+5-2)}{121} = \frac{7}{11}$

$1260=2^2\cdot3^2\cdot5\cdot7 \\\ 1980=2^2\cdot3^2\cdot5\cdot11 \\\ HOD=2^2\cdot3^2\cdot5=180 \\\ \frac{1260}{1980} = \frac{7}{11}$