-9n-7n=-9(n-4)-9(n+4)

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Solution for -9n-7n=-9(n-4)-9(n+4) equation:


Simplifying
-9n + -7n = -9(n + -4) + -9(n + 4)

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

Reorder the terms:
-16n = -9(-4 + n) + -9(n + 4)
-16n = (-4 * -9 + n * -9) + -9(n + 4)
-16n = (36 + -9n) + -9(n + 4)

Reorder the terms:
-16n = 36 + -9n + -9(4 + n)
-16n = 36 + -9n + (4 * -9 + n * -9)
-16n = 36 + -9n + (-36 + -9n)

Reorder the terms:
-16n = 36 + -36 + -9n + -9n

Combine like terms: 36 + -36 = 0
-16n = 0 + -9n + -9n
-16n = -9n + -9n

Combine like terms: -9n + -9n = -18n
-16n = -18n

Solving
-16n = -18n

Solving for variable 'n'.

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

Add '18n' to each side of the equation.
-16n + 18n = -18n + 18n

Combine like terms: -16n + 18n = 2n
2n = -18n + 18n

Combine like terms: -18n + 18n = 0
2n = 0

Divide each side by '2'.
n = 0

Simplifying
n = 0

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