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Here's the question you clicked on:
kde123
solve: 78=-2(m+3)+m
78= -2m-6+m 78= -m-6 78+6= -m 84= -m m= -84
Just rearrange the like terms in this type of problems...
\[78=-2(m+3)+m\]\[78=-2m-6+m\]\[84=-m\]\[m=-84\]
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