7+5n=21-2n

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Solution for 7+5n=21-2n equation:


Simplifying
7 + 5n = 21 + -2n

Solving
7 + 5n = 21 + -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 + 5n + 2n = 21 + -2n + 2n

Combine like terms: 5n + 2n = 7n
7 + 7n = 21 + -2n + 2n

Combine like terms: -2n + 2n = 0
7 + 7n = 21 + 0
7 + 7n = 21

Add '-7' to each side of the equation.
7 + -7 + 7n = 21 + -7

Combine like terms: 7 + -7 = 0
0 + 7n = 21 + -7
7n = 21 + -7

Combine like terms: 21 + -7 = 14
7n = 14

Divide each side by '7'.
n = 2

Simplifying
n = 2

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