3a+18=a+27

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Solution for 3a+18=a+27 equation:


Simplifying
3a + 18 = a + 27

Reorder the terms:
18 + 3a = a + 27

Reorder the terms:
18 + 3a = 27 + a

Solving
18 + 3a = 27 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
18 + 3a + -1a = 27 + a + -1a

Combine like terms: 3a + -1a = 2a
18 + 2a = 27 + a + -1a

Combine like terms: a + -1a = 0
18 + 2a = 27 + 0
18 + 2a = 27

Add '-18' to each side of the equation.
18 + -18 + 2a = 27 + -18

Combine like terms: 18 + -18 = 0
0 + 2a = 27 + -18
2a = 27 + -18

Combine like terms: 27 + -18 = 9
2a = 9

Divide each side by '2'.
a = 4.5

Simplifying
a = 4.5

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