28 + N = 68
Subtract 28 from each side:
N = 40
-53+n = -28 n = -28+53 n = 25
n = 7. 3(7) + 7 = 28. 21+7=28
90
23+n+5+n=23+5+n+n=28+2nIt depends what n is, once, you find out what n is equal to, plug it in to the equation above in bold.
N=0
-53+n = -28 n = -28+53 n = 25
n = 28
n = 7. 3(7) + 7 = 28. 21+7=28
40-n equals 28 = 12
12/n+7m=30 12/6=2 + 7x4=28
90
23+n+5+n=23+5+n+n=28+2nIt depends what n is, once, you find out what n is equal to, plug it in to the equation above in bold.
n = 8
2 plus n is the true one, but 1 plus n is not?
N=0
2n plus 7 equals 19 2n equals 12 n equals 6
m = n/(n-1)