-2a+b=17

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Solution for -2a+b=17 equation: 


Simplifying
-2a + b = 17

Solving
-2a + b = 17

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 = 17 + -1b

Combine like terms: b + -1b = 0
-2a + 0 = 17 + -1b
-2a = 17 + -1b

Divide each side by '-2'.
a = -8.5 + 0.5b

Simplifying
a = -8.5 + 0.5b

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