8a-7a=-4

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Solution for 8a-7a=-4 equation: 


Simplifying
8a + -7a = -4

Combine like terms: 8a + -7a = 1a
1a = -4

Solving
1a = -4

Solving for variable 'a'.

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

Divide each side by '1'.
a = -4

Simplifying
a = -4

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