11.oblicz najduszym sposobem:
105+(-7)+(-13)+20+4587+(-89)=
wiem że trudne ale prosze zrobić
z góry dzienki
105+(-7)+(-13)+20+4587+(-89)=98+(-13)+20+4587+(-89) = 85+20+4587+(-89)= 95+4587+(-89)=4682+(-89)=4593
105-7 =98
98-13=85
85+20=105
105+4587=4692
4692-89=4603
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105+(-7)+(-13)+20+4587+(-89)=98+(-13)+20+4587+(-89) = 85+20+4587+(-89)= 95+4587+(-89)=4682+(-89)=4593
105-7 =98
98-13=85
85+20=105
105+4587=4692
4692-89=4603