решите уравнение (1/4+3/4х):0,45=25/36

(1/4 + 3/4х) : 0,45 = 25/361/4 + 3/4х = 25/36 * 0,451/4 + 3/4х = 25/36 * 9/201/4 + 3/4х = 5/163/4х = 5/16 - 1/43/4х = 5/16 - 4/163/4х = 1/16х = 1/16 : 3/4х = 1/16 * 4/3х = 1/12Пояснения:0,45 = 45/100 = 9/20 - сократили на 525/36 * 9/20 = (5*1)/(4*4) = 5/161/4 = 4/16 - доп.множ. 4