-9a+b=90

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Solution for -9a+b=90 equation: 


Simplifying
-9a + b = 90

Solving
-9a + b = 90

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.
-9a + b + -1b = 90 + -1b

Combine like terms: b + -1b = 0
-9a + 0 = 90 + -1b
-9a = 90 + -1b

Divide each side by '-9'.
a = -10 + 0.1111111111b

Simplifying
a = -10 + 0.1111111111b

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