Question

-10,125 * 3 1/3 + ( - 8,75) * 2 4/7
Решите по действиям

Answer 1

-10,125 * 3 1/3 + ( - 8,75) * 2 4/7= 

1) -10,125 * 3 1/3 = -10 1/8 * 10/3 = - 81/8 * 10/3 = -(81*10)/(8*3)= -(27*5)/4 = -135/4
2) ( - 8,75) * 2 4/7 = -8 3/4 * 18/7 = - 35/4*18/7 = - (5*18)/4= -90/4
3) -135/4-90/4= -225/4 = -56,25