Zad. 1 str. 39 podręcznik 1 gimnazjum -27+12= -33+44= -23+(-17)= 16-60= -15-25= -30-(-50)= -3/4+(-3/4)= 0,2-0,7= -0,6-0,4= -1-(-4/7)= 5,5-(-0,8)= -0,75+1/4=
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-27+12 =-15
-33+44 = 11
-23+(-17) = -40
16-60 = -44
-15-25 =-40
-30-(-50) = 20
-3/4+(-3/4) =-6/4 = -1 2/4 = -1 1/2
0,2-0,7 = -0,5
-0,6-0,4 = -1
-1-(-4/7) = -3/7
5,5-(-0,8) = 6,3
-0,75+1/4 = -0,75+0,25 = -0,5