7a-a=-20+a

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Solution for 7a-a=-20+a equation:


Simplifying
7a + -1a = -20 + a

Combine like terms: 7a + -1a = 6a
6a = -20 + a

Solving
6a = -20 + 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.
6a + -1a = -20 + a + -1a

Combine like terms: 6a + -1a = 5a
5a = -20 + a + -1a

Combine like terms: a + -1a = 0
5a = -20 + 0
5a = -20

Divide each side by '5'.
a = -4

Simplifying
a = -4

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