If _a(a b)=x , then what is _b(a b) equal to?

Step-by-step solution

aligned & _a a b=x & _a a+ _a b=x & 1 _b a =x-1 aligned aligned _b a & = 1 x-1 ...(i) _b a b & = _b a+ _b b & = 1 x-1 +1 (From (1)) & = 1+x-1 x-1 _b a b & = x x-1 aligned