-2a+b=13

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Solution for -2a+b=13 equation: 


Simplifying
-2a + b = 13

Solving
-2a + b = 13

Solving for variable 'a'.

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

Add '-1b' to each side of the equation.
-2a + b + -1b = 13 + -1b

Combine like terms: b + -1b = 0
-2a + 0 = 13 + -1b
-2a = 13 + -1b

Divide each side by '-2'.
a = -6.5 + 0.5b

Simplifying
a = -6.5 + 0.5b

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