ab = 2/9ba, where a + b = 9
We cannot tell whether that first equation is
2
ab = —————, which you type as ab = 2/(9ba)
9ba
2
ab = ——— a, which you type as ab = [2/(9b)]a
9b
or
2
ab = ——— ba, which you type as (2/9)(ba)
9
Please repost
Edwin
AnlytcPhil@aol.com