Question

Решите уравнения b-1/15=2/5. 1целая2/3-b=5/6

Answer 1

B-1/15=2/5, b=2/5+1/15=6/15+1/15=7/15
1 2/3-b=5/6, b=1 2/3-5/6=1 4/6 - 5/6= 10/6-5/6=5/6