-a+6a-9=30

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Solution for -a+6a-9=30 equation:


Simplifying
-1a + 6a + -9 = 30

Reorder the terms:
-9 + -1a + 6a = 30

Combine like terms: -1a + 6a = 5a
-9 + 5a = 30

Solving
-9 + 5a = 30

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 9 + 5a = 30 + 9

Combine like terms: -9 + 9 = 0
0 + 5a = 30 + 9
5a = 30 + 9

Combine like terms: 30 + 9 = 39
5a = 39

Divide each side by '5'.
a = 7.8

Simplifying
a = 7.8

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