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There is no equation (nor inequality) in the question. Also, the expression in the question is missing something between -7 and 2n.
-7 = 2n + 19 Subtract 19 from both side -26 = 2n Divide by 2 on both sides n = -13
2n + 19 = -7 2n = -7 - 19 2n = -26 n= -13
2n plus 7 equals 19 2n equals 12 n equals 6
When n=53, then 2n + 1 = 107
Add them together. They equal 2n.
3n + 2n = 25 5n = 25 n = 5
19-2n = 17
The value of n is 12.5
2n + 4m - 2n + m = 5m
5n + 7 = 28 + 2n (-2n) 3n + 7 = 28 (-7) 3n = 21 therefore, n = 7
n = -6
2n plus 4 = 2n + 4