-2n-7(n-7)=31-3n

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Solution for -2n-7(n-7)=31-3n equation:


Simplifying
-2n + -7(n + -7) = 31 + -3n

Reorder the terms:
-2n + -7(-7 + n) = 31 + -3n
-2n + (-7 * -7 + n * -7) = 31 + -3n
-2n + (49 + -7n) = 31 + -3n

Reorder the terms:
49 + -2n + -7n = 31 + -3n

Combine like terms: -2n + -7n = -9n
49 + -9n = 31 + -3n

Solving
49 + -9n = 31 + -3n

Solving for variable 'n'.

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

Add '3n' to each side of the equation.
49 + -9n + 3n = 31 + -3n + 3n

Combine like terms: -9n + 3n = -6n
49 + -6n = 31 + -3n + 3n

Combine like terms: -3n + 3n = 0
49 + -6n = 31 + 0
49 + -6n = 31

Add '-49' to each side of the equation.
49 + -49 + -6n = 31 + -49

Combine like terms: 49 + -49 = 0
0 + -6n = 31 + -49
-6n = 31 + -49

Combine like terms: 31 + -49 = -18
-6n = -18

Divide each side by '-6'.
n = 3

Simplifying
n = 3

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