45375+23279=x+12196 решить уравнения

45375+23279=x+12196;

68654=x+12196;

-x=12196-68654;

-x=-56458;

x=56458

(cosx+cos7x)+(cos2x+cos6x)=2cos4xcos3x+2cos4xcos2x=2cos4x(cos3x+cos2x)=2cos4x(2cos5x/2 cosx/2)=4cos(x/2)*cos(5x/2)*cos(4x)

32 = 4 * 8

32 * 1/4 = 8

32 * 2 = 8 * 8