3a-45+a+18=3a

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Solution for 3a-45+a+18=3a equation:


Simplifying
3a + -45 + a + 18 = 3a

Reorder the terms:
-45 + 18 + 3a + a = 3a

Combine like terms: -45 + 18 = -27
-27 + 3a + a = 3a

Combine like terms: 3a + a = 4a
-27 + 4a = 3a

Solving
-27 + 4a = 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
-27 + 4a + -3a = 3a + -3a

Combine like terms: 4a + -3a = 1a
-27 + 1a = 3a + -3a

Combine like terms: 3a + -3a = 0
-27 + 1a = 0

Add '27' to each side of the equation.
-27 + 27 + 1a = 0 + 27

Combine like terms: -27 + 27 = 0
0 + 1a = 0 + 27
1a = 0 + 27

Combine like terms: 0 + 27 = 27
1a = 27

Divide each side by '1'.
a = 27

Simplifying
a = 27

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