а)67+(33+(-89)=67+33-89=11
г)(-45+(-22)+(-18)=-45-22-18=-85
б)-45+10+(-15)+90=-45+10-15+90=40
д)53+(-14)+(-76)+(-13)=53-14-76-13=-50
в)45+25+(-15)+(-75)=45+25-15-75=-20
е)32+(-12)+57+(-17) = 32-12+57-17=60
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а)67+(33+(-89)=67+33-89=11
г)(-45+(-22)+(-18)=-45-22-18=-85
б)-45+10+(-15)+90=-45+10-15+90=40
д)53+(-14)+(-76)+(-13)=53-14-76-13=-50
в)45+25+(-15)+(-75)=45+25-15-75=-20
е)32+(-12)+57+(-17) = 32-12+57-17=60