Answer:
34, its asking the sum of the 1st column. Sum means you have to add. So you add 7+2+11+14 and get the total of 34.
34
Explanation:
Sum means that you add.
column means the first set going verticly.
so 7 + 2 + 11 + 14
9 + 11 + 14
20 + 14
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