3(1.25)+1n+1(6.25)+2n=34.60

Solution for 3(1.25)+1n+1(6.25)+2n=34.60 equation:

Simplifying
3(1.25) + 1n + 1(6.25) + 2n = 34.60

Multiply 3 * 1.25
3.75 + 1n + 1(6.25) + 2n = 34.60

Multiply 1 * 6.25
3.75 + 1n + 6.25 + 2n = 34.60

Reorder the terms:
3.75 + 6.25 + 1n + 2n = 34.60

Combine like terms: 3.75 + 6.25 = 10
10 + 1n + 2n = 34.60

Combine like terms: 1n + 2n = 3n
10 + 3n = 34.60

Solving
10 + 3n = 34.60

Solving for variable 'n'.

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

Add '-10' to each side of the equation.
10 + -10 + 3n = 34.60 + -10

Combine like terms: 10 + -10 = 0
0 + 3n = 34.60 + -10
3n = 34.60 + -10

Combine like terms: 34.60 + -10 = 24.6
3n = 24.6

Divide each side by '3'.
n = 8.2

Simplifying
n = 8.2