-9-20a=6

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Solution for -9-20a=6 equation:


Simplifying
-9 + -20a = 6

Solving
-9 + -20a = 6

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 + -20a = 6 + 9

Combine like terms: -9 + 9 = 0
0 + -20a = 6 + 9
-20a = 6 + 9

Combine like terms: 6 + 9 = 15
-20a = 15

Divide each side by '-20'.
a = -0.75

Simplifying
a = -0.75

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