Предмет: Математика, автор: lelaiangel57

75+(25÷ x)=80
(35+ y)-15=56
12+( x+27)=83
61-( x+15)=30
помогите пожалуйста решить уравнение))))​

Ответы

Автор ответа: 1grom9
4

25÷х=80-75

25÷х=5

х=25÷5

х=5

35+у=56+15

35+у=71

у=71-35

у=36

х+27=83-12

х+27=71

х=71-27

х=44

х+15=61-30

х+15=31

х=31-15

х=16

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