Question

Which expression represents the phrase, "one third the sum of 12 and a number"?

13(12)+x

13x+12

13+12+x

13(12+x)

Answer 1

if anything id say the last one 13(12+x)
:)

Answer 2

1/3(12 + x) <==

the sum means add....so 1/3 of the sum (12 + x).....1/3(12 + x)