5х = 2,43 * 2
5х = 4,86
х = 0,972
17/36:(7/12-5/9)=17/36:(21/36-20/36)=17/36*36/1=17
19/24:(3/16+5/24)=19/24:(9/48+10/48)=19/24*48/19=2
(y+46)/3=18
y+46=54
y=-46+54
y=8
10000 • ( Х - 1,03 ) = 4,52
Х - 1,03 = 4,52 : 10000
Х - 1,03 = 0,000452
Х = 0,000452 + 1,03
Х = 1,030452