If you mean: 6/n times 5/n-1 = 1/3
Then: 30/n2-n = 1/3
Multiplying both sides by n2-n: 30 = n2-n/3
Multiplying both sides by 3: 90 = n2-n
Subtracting 90 from both sides: 0 = n2-n-90 or n2-n-90 = 0
Solving the above quadratic equation: n = -9 or n =10
If n is of a material value its more likely to be 10
Note that n2 means n squared
1 over 3 plus 1 over 12 equals 5 over 12
x=9
7 over 8
its 2 over 8
(4/9) x = That's not an equation. If there were a number after the 'equals' sign, then we could calculate the value of 'x'. But as it is, there's no question there, so there's nothing to solve.
The question is ambiguous. Does "2 over 3 times n" mean 2/(3*n) or (2/3)*n
1 over 3 plus 1 over 12 equals 5 over 12
x=9
7 over 8
its 2 over 8
3.6
(4/9) x = That's not an equation. If there were a number after the 'equals' sign, then we could calculate the value of 'x'. But as it is, there's no question there, so there's nothing to solve.
1/2
9
It is an equation and the value of x is 91
It is an equation and the value of a is 16
-1