а) х=18;
б) 2,5; 3,1; 4,1; 8,2.
( 3.44 : ( 0.711 - 0.311) +2 ) х = 190.8
( 3.44 : 0.4 + 2) х = 190.8
( 8.6 + 2) х = 190.8
10..6х = 190.8
х = 190.8 : 10.6
х = 18
2.465 = 2.5 3.11 = 3.1 4.15 = 4.2 8.155 = 8.2
а) х=18;
б) 2,5; 3,1; 4,1; 8,2.
( 3.44 : ( 0.711 - 0.311) +2 ) х = 190.8
( 3.44 : 0.4 + 2) х = 190.8
( 8.6 + 2) х = 190.8
10..6х = 190.8
х = 190.8 : 10.6
х = 18
2.465 = 2.5 3.11 = 3.1 4.15 = 4.2 8.155 = 8.2