Предмет: Математика, автор: filkulik20031

18*20-х=90 720:8+х=470 350:с=5*10 к:30=60*5

Ответы

Автор ответа: Миротензия
0
18*20-х=90   360-х=90   х=360-90   х=270
720:8+х=470   90+х=470   х=470-90   х=380
350:с=5*10   350:с=50   с=350:50   с=70
к:30=60*5   к:30=300   к=300*30   к=9000

Автор ответа: пныьиаы3597293
0
"№255 длина прямоугольника в 3 раза больше его ширины. Найди площадь прямоугольника если его ширина на 12 см меньше длины" пожалуста помоги
Автор ответа: пныьиаы3597293
0
мне надо решеня
Автор ответа: пныьиаы3597293
0
ау
Автор ответа: filkulik20031
0
нужно умножить и разделить на 2 формула (а*в):2
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