Вычислите наиболее удобным способом: (4+1,8) + 2,2= 1,6+ ( 5 + 3,4)= ( 2,41 + 13) + 4,59= 0,3+( 1,7+2,5)= (3,8+6) + 4,2=

1 ) ( 4 + 1 , 8 ) + 2 , 2 = 4 + 1 + 0 , 8 + 2 + 0 , 2 = 5 + 1 + 2 = 6 + 2 = 8 2 ) 1 , 6 + ( 5 + 3 , 4 ) = 1 , 6 + 5 + 3 , 4 = 1 + 0 , 6 + 5 + 3 + 0 , 4 = 6 + 3 + 1 = 9 + 1 = 10 3 ) ( 2 , 41 + 13 ) + 4 , 59 = 2 , 41 + 4 , 59 + 13 = 7 + 13 = 20 4 ) 0 , 3 + ( 1 , 7 + 2, 5 ) = 0 , 3 + 1 , 7 + 2 , 5 2 + 2 , 5 = 4 , 5 5 ) ( 3 , 8 + 6 ) + 4 , 2 = 3 , 8 + 6 + 4 , 2 = 8 + 6 = 14 6 ) 12 , 25 + ( 8 + 3 , 75 ) = 12 , 25 + 8 + 3 , 75 = 16 + 8 = 247 ) 8 , 3 + ( 2 , 7 + 8 ) = 8 , 3 + 2 , 7 + 8 = 9 + 2 + 8 = 11 + 8 = 19 8) 10 , 2 + ( 1, 7 + 4 , 8 ) = 11 + 4 + 1 , 7 = 16 , 7 9 ) ( 46 , 3 + 18 ) + 4 , 7 = 47 + 4 + 18 = 47 + 22 = 69