18+2a=b

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Solution for 18+2a=b equation:


Simplifying
18 + 2a = b

Solving
18 + 2a = b

Solving for variable 'a'.

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

Add '-18' to each side of the equation.
18 + -18 + 2a = -18 + b

Combine like terms: 18 + -18 = 0
0 + 2a = -18 + b
2a = -18 + b

Divide each side by '2'.
a = -9 + 0.5b

Simplifying
a = -9 + 0.5b

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