(15х-14х)-1683=23*10 (2832+(23х-22х)=38*100 4823+(23х-22х)=60*90 - вопрос №15141683231028322322381004823232260908070618 от alexfeels555 20.08.2020 06:03

Question

Математика: (15х-14х)-1683=23*10 (2832+(23х-22х)=38*100 4823+(23х-22х)=60*90 (78х-77х)-41*10=289 решить

alexfeels555 · Answer

(15х-14х)-1683=23×10х=1683+230х=1913(15×1913-14 ×1913)-1683=230(28695 -26782)-1683=2301913-1683=230 230 =230 2832+(23х-22х)=38×1002832+х=3800 х=3800-2832 х=968 2832+(23×968 -22×968)=3800 2832+(22264-21296)=38002832+968=3800 3800=3800 4823+(23х-22х)=60×90 4823+х=5400 х=5400-4823 х=577 4823+(23×577-22×577)=5400 4823+(13271-12694)=5400 4823+578=5400 5400 =5400 (78х-77х)-41×10 =289 х-410=289 х=289 +410 х=699 (78×699-77×699)-410=289 (54522-53823)-410 =289 699-410=289 289 =289...