8/15k+3/15k-5/15k=6/15k
6/15*3,5=0,4*3,5=1,4
k (8/15 + 1\5 - 1\3) = k * 6\15 (или 0.4)
k = 3.5
0.4 * 3.5 = 1.4
8/15k+3/15k-5/15k=6/15k
6/15*3,5=0,4*3,5=1,4
k (8/15 + 1\5 - 1\3) = k * 6\15 (или 0.4)
k = 3.5
0.4 * 3.5 = 1.4