Question

вычеслите наиболее удобным способом 1) (6 8/11 *4/5 ) * 1 1/4 ; 2) 2 5/6 * ( 17,8 * 6 /17)

Answer 1

[ 6 811 x 45 ] x 114 = 45 x 114 x 6 811= 115 x 7411 = 745 = 14, 8
2 56 x [ 17, 8 x 617] = 2 56 x 617 x 178 =176 x 617 x 17, 8 = 1 x 17.8 = 17, 8
6 811 = 7411
2 56 =176