3(a+4)=18+a

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Solution for 3(a+4)=18+a equation:


Simplifying
3(a + 4) = 18 + a

Reorder the terms:
3(4 + a) = 18 + a
(4 * 3 + a * 3) = 18 + a
(12 + 3a) = 18 + a

Solving
12 + 3a = 18 + 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.
12 + 3a + -1a = 18 + a + -1a

Combine like terms: 3a + -1a = 2a
12 + 2a = 18 + a + -1a

Combine like terms: a + -1a = 0
12 + 2a = 18 + 0
12 + 2a = 18

Add '-12' to each side of the equation.
12 + -12 + 2a = 18 + -12

Combine like terms: 12 + -12 = 0
0 + 2a = 18 + -12
2a = 18 + -12

Combine like terms: 18 + -12 = 6
2a = 6

Divide each side by '2'.
a = 3

Simplifying
a = 3

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