-(a-2)-6a-2=21

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Solution for -(a-2)-6a-2=21 equation:


Simplifying
-1(a + -2) + -6a + -2 = 21

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

Reorder the terms:
2 + -2 + -1a + -6a = 21

Combine like terms: 2 + -2 = 0
0 + -1a + -6a = 21
-1a + -6a = 21

Combine like terms: -1a + -6a = -7a
-7a = 21

Solving
-7a = 21

Solving for variable 'a'.

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

Divide each side by '-7'.
a = -3

Simplifying
a = -3

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