Adding and subtracting decimals.
in order of operations by

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?????????????? "adding" ???????????? . . . ??????? yu dont du ADD ????????? . . . x+199.78 = 38.4101-159.9 . . . x+199.78=-121.4899 . . . x=-121.4899 -199.78 . . . x=-321.2699 . . . .
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