H5. Express
Therefore,
Step 1 :Let
Step 2 :Multiply both sides by 100 to get
Step 3 :Subtract the original equation from the new one to get
Step 4 :Divide both sides by 99 to get
Step 5 :Multiply both the numerator and the denominator by 4 to get rid of the decimal in the numerator, resulting in
Step 6 :Therefore,