3n=36 Write the equation
n=12 Divide each side of the equation by 3 to get the variable alone.
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3n and n = 4? 3n ( the four replaces the n 3(4) = 12 =======
3n - 24 = 14 - 30n33n = 38n = 38/33
3n-5=13 +5 +5 3n=18 /3 /3 n=6
Let's give it a go:3n - 6 = 9Add 6 to each side of the equation:3n = 15Divide each side by 3:n = 5
4n - 7n = 21(4-7) n =21-3n = 21divide both sides by -3n = -7