12a+3=31+5a

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Solution for 12a+3=31+5a equation:


Simplifying
12a + 3 = 31 + 5a

Reorder the terms:
3 + 12a = 31 + 5a

Solving
3 + 12a = 31 + 5a

Solving for variable 'a'.

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

Add '-5a' to each side of the equation.
3 + 12a + -5a = 31 + 5a + -5a

Combine like terms: 12a + -5a = 7a
3 + 7a = 31 + 5a + -5a

Combine like terms: 5a + -5a = 0
3 + 7a = 31 + 0
3 + 7a = 31

Add '-3' to each side of the equation.
3 + -3 + 7a = 31 + -3

Combine like terms: 3 + -3 = 0
0 + 7a = 31 + -3
7a = 31 + -3

Combine like terms: 31 + -3 = 28
7a = 28

Divide each side by '7'.
a = 4

Simplifying
a = 4

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