Question

Вычислить 40/143-41/156=

Answer 1

40/143  -  41/156 =  (40 * 12  -  41 * 11)/1716 = 480/1716  -  451/1716 =  29/1716

Answer 2

$\frac{40}{143}- \frac{41}{156}= \frac{12*40}{1716}- \frac{11*41}{1716}= \frac{480}{1716}- \frac{451}{1716}= \frac{29}{1716}$