3(2a-1)=12a+21

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Solution for 3(2a-1)=12a+21 equation:


Simplifying
3(2a + -1) = 12a + 21

Reorder the terms:
3(-1 + 2a) = 12a + 21
(-1 * 3 + 2a * 3) = 12a + 21
(-3 + 6a) = 12a + 21

Reorder the terms:
-3 + 6a = 21 + 12a

Solving
-3 + 6a = 21 + 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
-3 + 6a + -12a = 21 + 12a + -12a

Combine like terms: 6a + -12a = -6a
-3 + -6a = 21 + 12a + -12a

Combine like terms: 12a + -12a = 0
-3 + -6a = 21 + 0
-3 + -6a = 21

Add '3' to each side of the equation.
-3 + 3 + -6a = 21 + 3

Combine like terms: -3 + 3 = 0
0 + -6a = 21 + 3
-6a = 21 + 3

Combine like terms: 21 + 3 = 24
-6a = 24

Divide each side by '-6'.
a = -4

Simplifying
a = -4

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