-(1+2n)=9-7n

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Solution for -(1+2n)=9-7n equation:


Simplifying
-1(1 + 2n) = 9 + -7n
(1 * -1 + 2n * -1) = 9 + -7n
(-1 + -2n) = 9 + -7n

Solving
-1 + -2n = 9 + -7n

Solving for variable 'n'.

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

Add '7n' to each side of the equation.
-1 + -2n + 7n = 9 + -7n + 7n

Combine like terms: -2n + 7n = 5n
-1 + 5n = 9 + -7n + 7n

Combine like terms: -7n + 7n = 0
-1 + 5n = 9 + 0
-1 + 5n = 9

Add '1' to each side of the equation.
-1 + 1 + 5n = 9 + 1

Combine like terms: -1 + 1 = 0
0 + 5n = 9 + 1
5n = 9 + 1

Combine like terms: 9 + 1 = 10
5n = 10

Divide each side by '5'.
n = 2

Simplifying
n = 2

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