Question

Work out 1/4 + 1/3 + 1/9 give your answer in its simplest form

Answer 1

Explanation:

convert all to a common denominator for addition (a handy trick is to multiply 2 numbers which the third is divisible by): 36

convert all to denom of 36:

9/36 + 12/36 + 4/36

add up numerators, leave denom alone:

25/36

this is already in its simplified form