19.
step-by-step explanation:
you add the 9 in the tens column since it is a single digit and 9 plus zero is 9 so it is 19
341
all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.
well your weight will go up if you are not going to burn the calories/ carbs
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