8a-7a+a-a=13

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Solution for 8a-7a+a-a=13 equation: 


Simplifying
8a + -7a + a + -1a = 13

Combine like terms: 8a + -7a = 1a
1a + a + -1a = 13

Combine like terms: 1a + a = 2a
2a + -1a = 13

Combine like terms: 2a + -1a = 1a
1a = 13

Solving
1a = 13

Solving for variable 'a'.

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

Divide each side by '1'.
a = 13

Simplifying
a = 13

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