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Mathematics 13 Online
OpenStudy (anonymous):

HELP please I've been stuck on this for awhile now. Solve the system: 3c - 6d =12 7c + 5d = 9

OpenStudy (anonymous):

\[\frac{15}{6}c+\frac{42}{6}c=19\]\[c=2\]Plugging this back into one of the two equations we get\[d=-1\]

OpenStudy (anonymous):

what I did was multiply the first equation by 5/6...then I added the two equations together which allowed me to eliminate d

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