3+4(2n-1)=55

Solution for 3+4(2n-1)=55 equation:

Simplifying
3 + 4(2n + -1) = 55

Reorder the terms:
3 + 4(-1 + 2n) = 55
3 + (-1 * 4 + 2n * 4) = 55
3 + (-4 + 8n) = 55

Combine like terms: 3 + -4 = -1
-1 + 8n = 55

Solving
-1 + 8n = 55

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '1' to each side of the equation.
-1 + 1 + 8n = 55 + 1

Combine like terms: -1 + 1 = 0
0 + 8n = 55 + 1
8n = 55 + 1

Combine like terms: 55 + 1 = 56
8n = 56

Divide each side by '8'.
n = 7

Simplifying
n = 7