23=15+a

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Solution for 23=15+a equation:


Simplifying
23 = 15 + a

Solving
23 = 15 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
23 + -1a = 15 + a + -1a

Combine like terms: a + -1a = 0
23 + -1a = 15 + 0
23 + -1a = 15

Add '-23' to each side of the equation.
23 + -23 + -1a = 15 + -23

Combine like terms: 23 + -23 = 0
0 + -1a = 15 + -23
-1a = 15 + -23

Combine like terms: 15 + -23 = -8
-1a = -8

Divide each side by '-1'.
a = 8

Simplifying
a = 8

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