-9a+4=31

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Solution for -9a+4=31 equation: 


Simplifying
-9a + 4 = 31

Reorder the terms:
4 + -9a = 31

Solving
4 + -9a = 31

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + -9a = 31 + -4

Combine like terms: 4 + -4 = 0
0 + -9a = 31 + -4
-9a = 31 + -4

Combine like terms: 31 + -4 = 27
-9a = 27

Divide each side by '-9'.
a = -3

Simplifying
a = -3

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