А) 3,1x - 0,3x + 2,2x - 4x =
B) 4,5a - 0,04a + 3,07a - 7,53a =
C) - (3,3a + 1,2b) - (0,7b + 1,7a) - (1,1b - 5a) =
D) (4,7a + 2,2c) • ( - 2) - (9,6a - 4,4c) =
E) 7,2 • (x + c) - ( 1,1x - 3,6c) • ( - 2) =
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3,1x-0,3x+2,2x-4x=x4,5a-0,04a+3,07a-7,53a=4,46a-4,46a=0
-(3,3a+1,2b)-(0,7b+1,7a)-(1,1b-5a)=-3,3a-1,2b-0,8b-1,7a-1,1b+5a=6,6a-3,1
(4,7a+2,2c)*(-2)-(9,6a-4,4c)=-9,4a-4,4c-9,6a+4,4c=-0,2a
7,2(x+c)-(1,1x-3,6c)*(-2)=7,2x+7,2c+2,2x+7,2c=9,4x+14,4