3=7n-5n

Solution for 3=7n-5n equation:

Simplifying
3 = 7n + -5n

Combine like terms: 7n + -5n = 2n
3 = 2n

Solving
3 = 2n

Solving for variable 'n'.

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

Add '-2n' to each side of the equation.
3 + -2n = 2n + -2n

Combine like terms: 2n + -2n = 0
3 + -2n = 0

Add '-3' to each side of the equation.
3 + -3 + -2n = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -2n = 0 + -3
-2n = 0 + -3

Combine like terms: 0 + -3 = -3
-2n = -3

Divide each side by '-2'.
n = 1.5

Simplifying
n = 1.5