To do this, change into common denominators. The common denominator is 21 so change the problem from 1/3 + 1/7 to 7/21 + 3/21. This gives you 10/21. It is already in simplest form.
Answer:
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A half a dollar is 50 cents. If you want to use quarters, you would need 6 more quarters to make 2 dollars.
A (verdadeiro)
e(verdadeiro)
