3n+7=43-n

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Solution for 3n+7=43-n equation:


Simplifying
3n + 7 = 43 + -1n

Reorder the terms:
7 + 3n = 43 + -1n

Solving
7 + 3n = 43 + -1n

Solving for variable 'n'.

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

Add 'n' to each side of the equation.
7 + 3n + n = 43 + -1n + n

Combine like terms: 3n + n = 4n
7 + 4n = 43 + -1n + n

Combine like terms: -1n + n = 0
7 + 4n = 43 + 0
7 + 4n = 43

Add '-7' to each side of the equation.
7 + -7 + 4n = 43 + -7

Combine like terms: 7 + -7 = 0
0 + 4n = 43 + -7
4n = 43 + -7

Combine like terms: 43 + -7 = 36
4n = 36

Divide each side by '4'.
n = 9

Simplifying
n = 9

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