помогите решить уравнение!( х- 2 5/6)÷20+7 1/5=7 1/2. Created by alinochka112004. matematika-ru

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alinochka112004 @alinochka112004

July 2022 1 7 Report

помогите решить уравнение!( х- 2 5/6)÷20+7 1/5=7 1/2

Answers & Comments

Opolishuk (х-2 5/6):20+7 1/5=7 1/2
(х-2 5/6):20=7 1/2-7 1/5
(х-2 5/6):20=7 5/10-7 2/10
(х-2 5/6):20=3/10
х-2 5/6=3/10*20
х-2 5/6=3*2
х-2 5/6=6
х=6-2 5/6
х=5 6/6-2 5/6
х=3 1/6

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7 pomogite pzh7c32ba69925d839eeaa9e366e8de06e0 66210

izvestno chto 280 g pervogo rastvora soderzhit 98 g soli a 220 g vtorogo rastvor34b5ee92ffa62d67eb452a7e7e234e05 33599

4ostatka skolko konfet ostalos sest v 3 den

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