1(2.5)+3(5)+n(0.25)=18.5

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Solution for 1(2.5)+3(5)+n(0.25)=18.5 equation: 


Simplifying
1(2.5) + 3(5) + n(0.25) = 18.5

Multiply 1 * 2.5
2.5 + 3(5) + n(0.25) = 18.5

Multiply 3 * 5
2.5 + 15 + n(0.25) = 18.5

Reorder the terms for easier multiplication:
2.5 + 15 + 0.25n = 18.5

Combine like terms: 2.5 + 15 = 17.5
17.5 + 0.25n = 18.5

Solving
17.5 + 0.25n = 18.5

Solving for variable 'n'.

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

Add '-17.5' to each side of the equation.
17.5 + -17.5 + 0.25n = 18.5 + -17.5

Combine like terms: 17.5 + -17.5 = 0.0
0.0 + 0.25n = 18.5 + -17.5
0.25n = 18.5 + -17.5

Combine like terms: 18.5 + -17.5 = 1
0.25n = 1

Divide each side by '0.25'.
n = 4

Simplifying
n = 4

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