3n-5=13 +5 +5 3n=18 /3 /3 n=6
8
Let's give it a go:3n - 6 = 9Add 6 to each side of the equation:3n = 15Divide each side by 3:n = 5
A is 14
To solve the equation 3n = 3x5, you first need to isolate the variable n. Divide both sides of the equation by 3 to get n = 5. Therefore, the answer is n = 5.
1/5
19 = f + 5 Subtract 5 from both sides: 14 = f
5-2=3n=3
3n(n+1] + 5 is the nth term
-5(3n plus 4) 40 is a set of disjointed expressions: it is not a formula and so cannot be solved.
5x+1=20 5x=20-1 5x=19 5x/5=19/5 x=19/5
3n + 2n = 25 5n = 25 n = 5