7=1-2n

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Solution for 7=1-2n equation:


Simplifying
7 = 1 + -2n

Solving
7 = 1 + -2n

Solving for variable 'n'.

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

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

Combine like terms: -2n + 2n = 0
7 + 2n = 1 + 0
7 + 2n = 1

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

Combine like terms: 7 + -7 = 0
0 + 2n = 1 + -7
2n = 1 + -7

Combine like terms: 1 + -7 = -6
2n = -6

Divide each side by '2'.
n = -3

Simplifying
n = -3

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