assuming the 12 are meant to be 1/2 then
8 + 1 = 9
1/2 + 1/2 = 2/2 = 1/1 = 1
9 + 1 = 10
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or 8 1/2 = 8.5 and 1 1/2 = 1.5
8.5 + 1.5 = 10
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8 plus 4 minus 12 divided by 1 is 0.
8 plus 1 times 12 minus 13 is equal to seven.
the answer is -1
0.5 + 1 + 0.75 + 2.125 + 0.5 = 4.875 = 4 and 7/8
It is the same as: 8/12 plus 1/12 = 9/12 or as 3/4 simplified