3 1/10-[7 4/5÷(6 1/4-1 3/8)]
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Hello,
31/10-[74/5÷(61/4-13/8)];
=31/10-[74/5÷(122-13/8)];
=31/10-[74/5÷(109/8)];
=31/10-[74/5×8/109)];
=31/10-[592/545];
=31/10-592/545;
=3379-1184/1090;
=2198/1090;
=439/218
bye :-)
31/10-[74/5÷(61/4-13/8)];
=31/10-[74/5÷(122-13/8)];
=31/10-[74/5÷(109/8)];
=31/10-[74/5×8/109)];
=31/10-[592/545];
=31/10-592/545;
=3379-1184/1090;
=2198/1090;
=439/218
bye :-)
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