4a+9a-6a=-42

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


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

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

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

Solving
7a = -42

Solving for variable 'a'.

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

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

Simplifying
a = -6

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