1)(-3 4/5:0,5)-(-3 4/5*0,5)=(-3,8:0,5)-(-3,8*0,5)=-7,6-(-1,9)=-5,7
2)a)(-2,5+0+1):3=-1,5:3=-0,5
b) [4,8+(-3)+1+(-6)]:4=-3,2:4=-0,8
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1)(-3 4/5:0,5)-(-3 4/5*0,5)=(-3,8:0,5)-(-3,8*0,5)=-7,6-(-1,9)=-5,7
2)a)(-2,5+0+1):3=-1,5:3=-0,5
b) [4,8+(-3)+1+(-6)]:4=-3,2:4=-0,8