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a) 105+(-7)+(-13)+20=
b)-16+67+(-10)+(-7)+66=
c)2i 2/7 +(4,1)+7 i 3/5+(-5,9)=
d)4i 4/7+5,4+(-1i 4/7)+(-7,4)=
e)-0,75+6,3+(-1,1)+(-1/4)+(-6,3)=
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a)105+(-7) + (-13) + 20= 105 - 7 - 13 +20= 105 - 20+ 20 = 105
b) -16 + 67 + (-10) +(-7) +66 = 51 -17 + 66= 34 + 66= 100
c) 2 i 2/7 +4,1+7 i 3/5 + (-5,9) = 2i 2/7 +4,1+7 i 3/5 - 5,9= 2,928
a) 105+(-7)+(-13)+20=105-7-13+20=98-13+20=85+20=105
b)-16+67+(-10)+(-7)+66=-16+67-10-7+66=51-17+66=34+66=100
c)2i 2/7 +(4,1)+7 i 3/5+(-5,9)=2i 2/7 +4,1+7.6-5.9=2i 2/7+11.7-5.9=
2i 2/7+5.8=16/7+58/10=160/70+406/70=566/70=8i6/70=8 i 2/35
d)4i 4/7+5,4+(-1i 4/7)+(-7,4)=4i 4/7-1i 4/7+5,4-7,4=3-2=1
e)-0,75+6,3+(-1,1)+(-1/4)+(-6,3)=-0,75+6,3-1,1-0.25-6,3=
5.55-1.35-6.3=4.2-6.3=-2.1