31-9a=12a+52

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Solution for 31-9a=12a+52 equation:


Simplifying
31 + -9a = 12a + 52

Reorder the terms:
31 + -9a = 52 + 12a

Solving
31 + -9a = 52 + 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
31 + -9a + -12a = 52 + 12a + -12a

Combine like terms: -9a + -12a = -21a
31 + -21a = 52 + 12a + -12a

Combine like terms: 12a + -12a = 0
31 + -21a = 52 + 0
31 + -21a = 52

Add '-31' to each side of the equation.
31 + -31 + -21a = 52 + -31

Combine like terms: 31 + -31 = 0
0 + -21a = 52 + -31
-21a = 52 + -31

Combine like terms: 52 + -31 = 21
-21a = 21

Divide each side by '-21'.
a = -1

Simplifying
a = -1

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