5-6a=a-21

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Solution for 5-6a=a-21 equation:


Simplifying
5 + -6a = a + -21

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

Solving
5 + -6a = -21 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
5 + -6a + -1a = -21 + a + -1a

Combine like terms: -6a + -1a = -7a
5 + -7a = -21 + a + -1a

Combine like terms: a + -1a = 0
5 + -7a = -21 + 0
5 + -7a = -21

Add '-5' to each side of the equation.
5 + -5 + -7a = -21 + -5

Combine like terms: 5 + -5 = 0
0 + -7a = -21 + -5
-7a = -21 + -5

Combine like terms: -21 + -5 = -26
-7a = -26

Divide each side by '-7'.
a = 3.714285714

Simplifying
a = 3.714285714

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