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Anonymous
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y=84-72=12 z=84-52=32 x=84-12-32=40
567 + 193 + 84 = 844
make it easier by taking out the decimals to begin with, then rearrange so: -49+84= 84-49= 35+12= 47 or 4.7
77
35 - 84 + 12 = -37