6 класс решите уравнение 1). 1 2/5 * ( -2 1/7) * 1/6 х = 4 1/2 * 47/18 * 1 2/34

Question

6 класс
решите уравнение
1). 1 2/5 * ( -2 1/7) * 1/6 х = 4 1/2 * 47/18 * 1 2/34

Answer 1

1 2/5 * ( -2 1/7) * 1/6 х = 4 1/2 * 47/18 * 1 2/34 = 

1 2/5 = (5+2)/5 = 7/5
-2 1/7 = -(2*7+1)7 = - 15/7

4 1/2 = (4*2+1)/2 = 9/2
1 2/34= (34*1+2)= 36/34

(7*(-15)*1) / (5*7*6) х = (9*47*36) / (2*18*34)
-15/30 х = (9*47) / (34)
-0,5 х = (9*47)/34
х = - (18*47) / 17
х ≈ - 24,88235