реши уравнение (640:у).9 -27 =45

Прям памогли

(640:y)*9=45+27(640:y)*9=72640:y=72:9640:y=8y=640:8y=80

(640:y)*9-27=45(640:y)*9=45+27(640:y)*9=72640:y=72:9640:y=8y=640:8y=80_______________(640:y)*9-27=45