<em>your answer should be three.</em>
<em />
<em>~iwa-chan</em>
<em />
You have to make them have their least common denominator to add or subtract, in this case 36.
Multiply 1/12 by 3, to get the denominator 36: 3/36.
Multiply 7/9 by 4, to get the denominator 36: 28/36.
Now add the numerators: 3+28=31, 31/36 is as simplified as possible so your answer is 31/36 :) I hope this helps :)
Five months
Reason: graph y=35.75x+75 and y=17.95x+164 and they connect in the middle of 253-254 for month 5
It would be 1/3rd because your last number would be 4 in the equation of 12 sandwiches.
Answer attached below. Hope it helps
