РЕШИТЕ УРАВНЕНИЯ
20:X=4:6
X:4.5=0.4:0.5
5/8:1/6=X:4
1 1/3:4=4:X
5.84:X=3 1/4:3.25

20:х=4:64х=20*64х=120х=120:4х=30х:4,5 = 0,4:0,50,5х=0,4*4,50,5х=1,8х=1,8:0,5х=3,61 1/3 :4 =4 :х1 1/3 * х =4*4        1 1/3 = 4/34/3 *х=16х=16:4/3х=125,84:х= 3 1/4 : 3,253 1/4 *х=5,84 * 3,25   3 1/4=13/413/4 *х=18,98х=18,98: 13/4х=5,84