50,56 - (24,16 +19,80) + 0,808 = 51,368(так 50,56+0,808)-4,36 = 47,008
21,021+60,19-(68,7-9,1) = 81,211-59,6 = 21,611
50,56 - (24,16 +19,80) + 0,808 = 51,368(так 50,56+0,808)-4,36 = 47,008
21,021+60,19-(68,7-9,1) = 81,211-59,6 = 21,611