Answer is n = 8
Step by step
First we want to get the constants on one side and the variable (with letter) on the other side.
Subtract 4 from both sides
3/4n + 4 - 4 = 10 - 4
Combine
3/4n = 6
Now to solve for n.
3/4n is the same as 3/4 x n, so to solve for n, we need to do the opposite, which here is to divide by 3/4 on both sides
* remember when you divide a fraction, you flip the divisor and multiply
3/4 * 4/3 n = 6 * 4/3
3/4 and 4/3 n cross multiply and = 1n or just n
6 * 4 /3
Multiply across then divide
6 * 4 = 24, then divide by 3 = 8
n = 8