450 : (4m - m) = 3 как проверку дедать

450÷(4m-m) = 3;

450÷(3m) = 3;

450÷3m = 3;

450 = 3m·3;

450 = 9m;

9m = 450;

m = 450÷9;

m = 50

m = 50

Пошаговое объяснение:

450÷(4m-m) = 3;

450÷(3m) = 3;

450÷3m = 3;

450 = 3m·3;

450 = 9m;

9m = 450;

m = 450÷9;

m = 50

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pusti budet x i y eti cisla

{x+y=60,x=y-2

{x=60-y,60-y=y-2

{x=60-y,60-y-y+2=0

{x=60-y,62=2y

{x=60-y,y=31

{x=29,y=31