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OpenStudy (jazzyfa30):
Use the substitution method to solve: m - n = 7 3m + 2n = 6. Select one: a. (-3,-10) b. (4.-3) c. (-5,2) d. (-4,3)
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OpenStudy (jazzyfa30):
@phi help
OpenStudy (anonymous):
using first equation find m in terms of n m=7+n put this value of m in the second equation 3(7+n)+2n=6 simplify and find n and then use m=7+n to find m
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