Factor Search

At the L H S
Select the variable x . Add 1 to it to get an algebraic term . Multiply that term by 10 .
Again , Add 1 to it to get an other algebraic term . Multiply the second term by 9 . At the R H S
Subtract 1 from the term recently obtained . Divide it by constant a
Subtract 1 from that term . Again , divide it by constant b . Subtract 1 from that term .
Divide it by constant c . On subtracting 1 , original term x is regained .

Note : As 10 and 9 are factors of 90 , the constants ' a ' , ' b ' and ' c ' are
factors of 90 . The number 90 results by the multiplication of
the constants ' a ' , ' b ' and ' c ' . Enter the answer as a+b+c .