упростите выражение:-5c-(4-3c)
-5c-(4-3c)-5c-4+3-2c-4
-5c-(4-3c)=-5c-4+3c=-2c-4
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-5c-(4-3c)
-5c-4+3
-2c-4
-5c-(4-3c)=-5c-4+3c=-2c-4