4+a=15

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Solution for 4+a=15 equation: 


Simplifying
4 + a = 15

Solving
4 + a = 15

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + a = 15 + -4

Combine like terms: 4 + -4 = 0
0 + a = 15 + -4
a = 15 + -4

Combine like terms: 15 + -4 = 11
a = 11

Simplifying
a = 11

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