If: 12-7n2 = 0 Then: n = square root of 12/7
3n + 4n = 42 7n = 42 n = 42/7 n = 6
7n-36=34 Add 36 to both sides: 7n=70 divide both sides by 7: n=10
7n = 98Divide each side by 7:n = 14
4n - 7n = 21(4-7) n =21-3n = 21divide both sides by -3n = -7
7n = 91n = 91÷7n = 13
-7n - 8 + 6 = 13 - 2 Add 2 to each side: -7n - 8 + 6 + 2 = 13 simplify: -7n = 13 n = -13/7 = -16/7
in an equation it would be 7n>42 (divide both sides by 7) = n>6
7n + 2 = 4n + 17Subtract 2 from each side:7n = 4n + 15Subtract 4n from each side:3n = 15Divide each side by 3:n = 5
(10, 2)
7n = 28n = 28/7 = 4
7n + 1 = 6n + 8 7n=6n+7 (minus 1 from each side) n=7 (7n-6n equals n, you are left with n=7)