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3 1/2 * 3 1/2 + 32 1/2 * 2 1/2=
= 7/2 * 7/2 + 65/2 * 5/2 =
= 49/4 + 325/4 = 12 1/4 + 81 1/4 = 93 2/4 = 93 1/2
b)
72 1/2 * 2 1/2 + 11 1/2 * 11 1/2=
= 145/2 * 5/2 + 23/2 * 23/2 = 725/4 + 529/4 = 181 1/4 + 132 1/4 =
= 313 + 2/4 = 313 1/2
c)
108 1/3 * 2 1/3 + 5 1/3 * 25 1/3=
= 325/3 * 7/3 + 16/3 * 76/3 = 2275/9 + 1216/9 =
= 3491/9 = 387 8/9
b)
c)