21-6a=69+2a

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Solution for 21-6a=69+2a equation:


Simplifying
21 + -6a = 69 + 2a

Solving
21 + -6a = 69 + 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.
21 + -6a + -2a = 69 + 2a + -2a

Combine like terms: -6a + -2a = -8a
21 + -8a = 69 + 2a + -2a

Combine like terms: 2a + -2a = 0
21 + -8a = 69 + 0
21 + -8a = 69

Add '-21' to each side of the equation.
21 + -21 + -8a = 69 + -21

Combine like terms: 21 + -21 = 0
0 + -8a = 69 + -21
-8a = 69 + -21

Combine like terms: 69 + -21 = 48
-8a = 48

Divide each side by '-8'.
a = -6

Simplifying
a = -6

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