.5n+.7n=12

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Solution for .5n+.7n=12 equation: 


Simplifying
0.5n + 0.7n = 12

Combine like terms: 0.5n + 0.7n = 1.2n
1.2n = 12

Solving
1.2n = 12

Solving for variable 'n'.

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

Divide each side by '1.2'.
n = 10

Simplifying
n = 10

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