10+9=n+15

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Solution for 10+9=n+15 equation:


Simplifying
10 + 9 = n + 15

Combine like terms: 10 + 9 = 19
19 = n + 15

Reorder the terms:
19 = 15 + n

Solving
19 = 15 + n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
19 + -1n = 15 + n + -1n

Combine like terms: n + -1n = 0
19 + -1n = 15 + 0
19 + -1n = 15

Add '-19' to each side of the equation.
19 + -19 + -1n = 15 + -19

Combine like terms: 19 + -19 = 0
0 + -1n = 15 + -19
-1n = 15 + -19

Combine like terms: 15 + -19 = -4
-1n = -4

Divide each side by '-1'.
n = 4

Simplifying
n = 4

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