What will be the best estimate of the weight of a bag of popcorn

Which equation and solution can be used to solve this problem? thirteen less than a number is sixteen. 13-n=16: add 13 to both sides. the answer is 29. n+13=16: subtract 13 from both sides. the answer is 3. n+16=13 subtract 13 from both sides. the answer is 3. n-13=16: add 13 to both sides. the answer is 29.

Is it true or false i’m trying to pass this test so i can leave school

Me. i can't figure out this question. give an explanation too. .