-2
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If 2 negatives are next to each other, it makes a positive. The expression becomes -5n+3n This equals -2n Footnote The above answer is correct. Another way to look at the problem is to factor out a -1 and the expression becomes (-1)(5n-3n) = (-1) (2n) = -2n
3n+5n=8n
5n + 12 = 3n Try to get all expressions with n on the left side 5n + 12 - 3n = 3n - 3n 2n + 12 = 0 Try to get rid of 12 on the left side 2n + 12 - 12 = -12 2n = -12 n = -12/2 = -6
(3n+2)(n+1)
It is an algebra expression meaning: 5n+4
7n - 2 + 3n + 4 = 7n + 3n - 2 + 4 = 10n + 2 which can be simplified to 2(5n +1)