42b+6a=30

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Solution for 42b+6a=30 equation: 


Simplifying
42b + 6a = 30

Reorder the terms:
6a + 42b = 30

Solving
6a + 42b = 30

Solving for variable 'a'.

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

Add '-42b' to each side of the equation.
6a + 42b + -42b = 30 + -42b

Combine like terms: 42b + -42b = 0
6a + 0 = 30 + -42b
6a = 30 + -42b

Divide each side by '6'.
a = 5 + -7b

Simplifying
a = 5 + -7b

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