3.5=8.5n-7.5n+7.8

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Solution for 3.5=8.5n-7.5n+7.8 equation:


Simplifying
3.5 = 8.5n + -7.5n + 7.8

Reorder the terms:
3.5 = 7.8 + 8.5n + -7.5n

Combine like terms: 8.5n + -7.5n = 1n
3.5 = 7.8 + 1n

Solving
3.5 = 7.8 + 1n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
3.5 + -1n = 7.8 + 1n + -1n

Combine like terms: 1n + -1n = 0
3.5 + -1n = 7.8 + 0
3.5 + -1n = 7.8

Add '-3.5' to each side of the equation.
3.5 + -3.5 + -1n = 7.8 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + -1n = 7.8 + -3.5
-1n = 7.8 + -3.5

Combine like terms: 7.8 + -3.5 = 4.3
-1n = 4.3

Divide each side by '-1'.
n = -4.3

Simplifying
n = -4.3

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