37b was amount time biking. His distance walked was 3 times open parenthesis 7 minus b close parenthesis. Total distance was 208 miles. 37b+3 multiplied by open parenthesis seven minus b close parenthesis equals 208. Then all you have to do is solve for b
Multiplying a/b by c/c gives the equivalent ratio (ac)/(bc) because c/c is 1, the multiplicative identity element. Multiplying by 1 does not change the ratio.
