4+9a=31

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Solution for 4+9a=31 equation: 


Simplifying
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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