How do you solve 39= 1 3/10b
1 3/10·b=39(1·10+3)·b/10=3913b/10=3913b=39·1013b=390|:13b=30Answer: 30
39= 13/10 b39= 1.3 b ( 13 divided by 10= 1.3)39/ 1.3= b (39 divided by 1.3)30=bAnswer is 30