Question 889410
There's not enough information to solve this definitively.
Let's take a look.
If a + b = {{{22/7}}}, there is not simply one possibility.
a could equal 3 and b {{{1/7}}}.  Then ab would be {{{3/7}}}.
a could equal 2 and b {{{8/7}}}.  Then ab would be {{{16/7}}}.