What do I do I can't understand it my teacher stupid

Mathematics

1 answer:

denpristay [2]2 years ago

5 0

Make them all fractions over 4, so 3 would be 12/4, and 1 1/4 would be 5/4 so add them together
12/4+5/4= 17/4 then divide by 4 to reduce it, to get 4 1/4

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