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2[33-22]-21=
2x11-21=
231-21=210
b(1¼ + 0,6) : 0,5=
(1,25+0,6):0,5=
1,85:0,5=
3,7
c)(3⅔ - 4)×(6-⅗)=
(11/3 - 12/3) x (30/2 - 3/0)=
-1/3 x 27/5=
-9/5=-1,8
b) (1 1/4 + 0,6) : 0,5=(1,25+0,6) : 0,5=1,85 : 0,5= 3,7
c) (3 2/3 - 4)*(6-3/5)= ( 11/3 - 4/1) * (6/1 - 3/5)= (11/3 - 12/3) * (30/5 - 3/5)= (-1/3) * 25/5= -25/15= -5/3= -1 2/3