5n+4=0 5n=-4 n= -4/5
5n+4 = -26 5n = -26-4 5n = -30 n = -6
4 over 5n
5n - 4 = 10n + 6-5n = 10n = -2
5n+6=(-4) n= (-2)
-3n+5n+4 = -4 2n = -4-4 2n = -8 n = -4
If n = 7, then 5n + 4 = 5 x 7 + 4 = 39.
5n+6=-45n=-10n=-2
5m-5n+5m+5n When simplified: 10m
5n - n = 8 + 4 ie 4n = 12 so n = 3
mn - 4m - 5n + 20 = (mn - 5n) - (4m - 20) = n(m - 5) - 4(m - 5) = (m -5)(n - 4)
3n+5n=8n