-7n-4-9n=-20

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Solution for -7n-4-9n=-20 equation:


Simplifying
-7n + -4 + -9n = -20

Reorder the terms:
-4 + -7n + -9n = -20

Combine like terms: -7n + -9n = -16n
-4 + -16n = -20

Solving
-4 + -16n = -20

Solving for variable 'n'.

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

Add '4' to each side of the equation.
-4 + 4 + -16n = -20 + 4

Combine like terms: -4 + 4 = 0
0 + -16n = -20 + 4
-16n = -20 + 4

Combine like terms: -20 + 4 = -16
-16n = -16

Divide each side by '-16'.
n = 1

Simplifying
n = 1

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