I got 39/56
you have to multiply each fraction by its denominator (4/7 x 8/8 and 1/8 x 7/7) so that way you get a common denominator. then when you multiply them which is (32/56 and 7/56) you add them ultimately getting the answer 39/56. You have to remember that when you add fractions you have to have a common denominator.
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3/7 + 4/7 = 7/7 = 1
4 1/7 (four and one seventh).
1 29/63
4 sevenths just over half
1 whole and 4 sevenths