3[2a+7]+6=3a+18

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Solution for 3[2a+7]+6=3a+18 equation:


Simplifying
3[2a + 7] + 6 = 3a + 18

Reorder the terms:
3[7 + 2a] + 6 = 3a + 18
[7 * 3 + 2a * 3] + 6 = 3a + 18
[21 + 6a] + 6 = 3a + 18

Reorder the terms:
21 + 6 + 6a = 3a + 18

Combine like terms: 21 + 6 = 27
27 + 6a = 3a + 18

Reorder the terms:
27 + 6a = 18 + 3a

Solving
27 + 6a = 18 + 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 + 6a + -3a = 18 + 3a + -3a

Combine like terms: 6a + -3a = 3a
27 + 3a = 18 + 3a + -3a

Combine like terms: 3a + -3a = 0
27 + 3a = 18 + 0
27 + 3a = 18

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

Combine like terms: 27 + -27 = 0
0 + 3a = 18 + -27
3a = 18 + -27

Combine like terms: 18 + -27 = -9
3a = -9

Divide each side by '3'.
a = -3

Simplifying
a = -3

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