-7n=20-9n

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Solution for -7n=20-9n equation: 


Simplifying
-7n = 20 + -9n

Solving
-7n = 20 + -9n

Solving for variable 'n'.

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

Add '9n' to each side of the equation.
-7n + 9n = 20 + -9n + 9n

Combine like terms: -7n + 9n = 2n
2n = 20 + -9n + 9n

Combine like terms: -9n + 9n = 0
2n = 20 + 0
2n = 20

Divide each side by '2'.
n = 10

Simplifying
n = 10

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