6a+3=3a+21

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Solution for 6a+3=3a+21 equation:


Simplifying
6a + 3 = 3a + 21

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

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

Solving
3 + 6a = 21 + 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.
3 + 6a + -3a = 21 + 3a + -3a

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

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

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

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

Combine like terms: 21 + -3 = 18
3a = 18

Divide each side by '3'.
a = 6

Simplifying
a = 6

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