2(-1)+a=239

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Solution for 2(-1)+a=239 equation: 


Simplifying
2(-1) + a = 239

Multiply 2 * -1
-2 + a = 239

Solving
-2 + a = 239

Solving for variable 'a'.

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

Add '2' to each side of the equation.
-2 + 2 + a = 239 + 2

Combine like terms: -2 + 2 = 0
0 + a = 239 + 2
a = 239 + 2

Combine like terms: 239 + 2 = 241
a = 241

Simplifying
a = 241

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