1-4a=9

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Solution for 1-4a=9 equation: 


Simplifying
1 + -4a = 9

Solving
1 + -4a = 9

Solving for variable 'a'.

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

Add '-1' to each side of the equation.
1 + -1 + -4a = 9 + -1

Combine like terms: 1 + -1 = 0
0 + -4a = 9 + -1
-4a = 9 + -1

Combine like terms: 9 + -1 = 8
-4a = 8

Divide each side by '-4'.
a = -2

Simplifying
a = -2

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