5a+6=2a+21

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Solution for 5a+6=2a+21 equation:


Simplifying
5a + 6 = 2a + 21

Reorder the terms:
6 + 5a = 2a + 21

Reorder the terms:
6 + 5a = 21 + 2a

Solving
6 + 5a = 21 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
6 + 5a + -2a = 21 + 2a + -2a

Combine like terms: 5a + -2a = 3a
6 + 3a = 21 + 2a + -2a

Combine like terms: 2a + -2a = 0
6 + 3a = 21 + 0
6 + 3a = 21

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

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

Combine like terms: 21 + -6 = 15
3a = 15

Divide each side by '3'.
a = 5

Simplifying
a = 5

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