Fill in the blanks:
Step 1: Write all the fractions with the least common denominator (LCD), .
Step 2: Transpose the fractions to the right side of the equation and solve for blank.
Step 3: Perform the subtraction keeping the common denominator.
Step 4: Multiply both sides of the equation by .
Step 5: Divide both the numerator and denominator by the common factor .
Hence, the required number is .