5х-3 1/2=4 2/3
5х=4 2/3+3 1/2
5х=4 2*2/3*2 + 3 3*1/2*3
5х= 4 4/6+3 3/6
5х=7 7/6=8 1/6
х= 49/6 :5/1=49/6*1/5=49/30 = 1 19/30
8х+11 2/11= 15
8х= 15 - 11 2/11 = 14 11/11- 11 2/11= 3 9/11= 42/11
х=42/11:8=42/11 *1/8=42/88 = 21/44
18-2х=16 3/4
-2х= 16 3/4 - 18
2х= 18-16 3/4= 17 4/4-16 3/4= 1 1/4= 5/4
х=5/4:2/1=5/4*1/2=5/8
4х-19 3/5= 23
4х=23+19 3/5= 42 3/5= 213/5
х=213/5:4/1=213/5*1/4=213/20=10 13/20