4a+9a=-42+6a

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Solution for 4a+9a=-42+6a equation: 


Simplifying
4a + 9a = -42 + 6a

Combine like terms: 4a + 9a = 13a
13a = -42 + 6a

Solving
13a = -42 + 6a

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
13a + -6a = -42 + 6a + -6a

Combine like terms: 13a + -6a = 7a
7a = -42 + 6a + -6a

Combine like terms: 6a + -6a = 0
7a = -42 + 0
7a = -42

Divide each side by '7'.
a = -6

Simplifying
a = -6

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