9000г-9кг
430065-9=430056кг
( 1/3 √ 27 )^2 = ( √ 27/9 )^2 = ( √ 3)^2 = 3
1)3 1/2*2 2/7= 7/2 * 16/7= 16/2 = 8
2) 31/103 * (4 4/15 - 1 44/45)= 31/103 * (64/15- 89/45) = 31/103 * ((192-89)/45)= 31/103 * 103/45= 31/45
3) 8-31/45 = 8/1 - 31/45= (360-31)/45 = 329/45 = 7 14/45
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8-6=2, 12-5=7, 18-9=9, 14-8=6,15-7=8, 11-4=7