4a-4=13a-31

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Solution for 4a-4=13a-31 equation:


Simplifying
4a + -4 = 13a + -31

Reorder the terms:
-4 + 4a = 13a + -31

Reorder the terms:
-4 + 4a = -31 + 13a

Solving
-4 + 4a = -31 + 13a

Solving for variable 'a'.

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

Add '-13a' to each side of the equation.
-4 + 4a + -13a = -31 + 13a + -13a

Combine like terms: 4a + -13a = -9a
-4 + -9a = -31 + 13a + -13a

Combine like terms: 13a + -13a = 0
-4 + -9a = -31 + 0
-4 + -9a = -31

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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