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OpenStudy (anonymous):
(81x - 47y) - (56x + 10y)
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OpenStudy (anonymous):
Take the parentheses out and combine like terms: 81x -47y -56x -10y, now just combine.
OpenStudy (anonymous):
idk how
OpenStudy (anonymous):
81x-47y-56x-10y 25x-57y
OpenStudy (anonymous):
81x - 56x is the same as saying 81 - 56 and tacking an X on to the end. -47y - 10y requires use of the integer rules. -47 + -10 and tacking a y onto the end.
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