n-1-2=4

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Solution for n-1-2=4 equation: 


Simplifying
n + -1 + -2 = 4

Reorder the terms:
-1 + -2 + n = 4

Combine like terms: -1 + -2 = -3
-3 + n = 4

Solving
-3 + n = 4

Solving for variable 'n'.

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

Add '3' to each side of the equation.
-3 + 3 + n = 4 + 3

Combine like terms: -3 + 3 = 0
0 + n = 4 + 3
n = 4 + 3

Combine like terms: 4 + 3 = 7
n = 7

Simplifying
n = 7

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