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Anonymous
n = 7. 3(7) + 7 = 28. 21+7=28
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24n
3n+1=7 3*2+1=7
3n + 6 = n + 202n = 14n = 7
-add 3n to both sides -subtract 2 from both sides -cancel out the both -divide 28 by 7.
n=-9.6
3n + 4n = -14 7n /7 = -14 /7 n = -2