{"result":{"text":"begin mathsize 14px style open square brackets b with rightwards arrow on top subscript 1 comma b with rightwards arrow on top subscript 2 stack comma b with rightwards arrow on top subscript 3 close square brackets equals open square brackets fraction numerator   a with rightwards arrow on top subscript 2 cross times a with rightwards arrow on top subscript 3 over denominator open square brackets   a with rightwards arrow on top subscript 1 a with rightwards arrow on top subscript 2 a with rightwards arrow on top subscript 3 close square brackets end fraction fraction numerator a with rightwards arrow on top subscript 3 cross times a with rightwards arrow on top subscript 1 over denominator open square brackets a with rightwards arrow on top subscript 1 a with rightwards arrow on top subscript 1 a with rightwards arrow on top subscript 3 close square brackets end fraction fraction numerator a with rightwards arrow on top subscript 1 cross times a with rightwards arrow on top subscript 2 over denominator open square brackets a with rightwards arrow on top subscript 1 a with rightwards arrow on top subscript 2 a with rightwards arrow on top subscript 3 close square brackets end fraction close square brackets equals fraction numerator 1 over denominator open square brackets a with rightwards arrow on top subscript 1 a with rightwards arrow on top subscript 2 a with rightwards arrow on top subscript 3 close square brackets end fraction end style"},"status":"ok"}