Question

Twenty added to the sum of a number and six is twenty-seven

Answer 1

-- Call the number 'N'.

-- The sum of the number and six is (N + 6).

-- Twenty added to it is    20 + (N + 6)

-- That whole thing is twenty-seven           

                                              20 + (N + 6) = 27

Subtract  20  from each side:          (N + 6) = 7

Subtract  6  from each side:              N      =  1

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Check: 

Put your solution into the statement and see if the statement is true.

     "Twenty added to the sum of (1 and six) is twenty-seven."

That's true.            yay !

Answer 2

For six is twenty seven will look like this 

6 = 27 

sorry i don't know what twenty added to the sum of a number is...