16=-9+a

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Solution for 16=-9+a equation: 


Simplifying
16 = -9 + a

Solving
16 = -9 + 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.
16 + -1a = -9 + a + -1a

Combine like terms: a + -1a = 0
16 + -1a = -9 + 0
16 + -1a = -9

Add '-16' to each side of the equation.
16 + -16 + -1a = -9 + -16

Combine like terms: 16 + -16 = 0
0 + -1a = -9 + -16
-1a = -9 + -16

Combine like terms: -9 + -16 = -25
-1a = -25

Divide each side by '-1'.
a = 25

Simplifying
a = 25

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