Question

вычислите :
1)8 3/4 * 2 4/7 - 10 1/8 * 3 1/3=
2)2 1/52 * 26/49 - 3 3/7 / 1 5/11=

Answer 1

35/4*18/7-81/8*10/3=35*18/4*7-81*10/8*3=-45/4= -11 1/4
15/52*26/49-24/7:16/11=15*26/52*49-24*11/7*16=105/98-33/14=-9/7=-1 2/7

Answer 2

$8 \frac{3}{4} *2 \frac{4}{7} -10 \frac{1}{8} *3 \frac{1}{3} =\\ \frac{35}{4}* \frac{18}{7}- \frac{81}{8} * \frac{10}{3} =\\ \frac{5*9}{2}- \frac{27*5}{4} =\\ \frac{45}{2} - \frac{135}{4} =\\ \frac{70-135}{4} =- \frac{65}{4} =-16.25$$2 \frac{1}{52} * \frac{26}{49} - 3 \frac{3}{7} / 1 \frac{5}{11} = \frac{105*26}{52*49} - \frac{24}{7} / \frac{16}{11} = \frac{1365}{882} - \frac{33}{14} = \frac{1365-2079}{882} = \frac{357}{441}$