5b-10a=-30

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Solution for 5b-10a=-30 equation: 


Simplifying
5b + -10a = -30

Reorder the terms:
-10a + 5b = -30

Solving
-10a + 5b = -30

Solving for variable 'a'.

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

Add '-5b' to each side of the equation.
-10a + 5b + -5b = -30 + -5b

Combine like terms: 5b + -5b = 0
-10a + 0 = -30 + -5b
-10a = -30 + -5b

Divide each side by '-10'.
a = 3 + 0.5b

Simplifying
a = 3 + 0.5b

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