8a+a=-4+7a

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


Simplifying
8a + a = -4 + 7a

Combine like terms: 8a + a = 9a
9a = -4 + 7a

Solving
9a = -4 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
9a + -7a = -4 + 7a + -7a

Combine like terms: 9a + -7a = 2a
2a = -4 + 7a + -7a

Combine like terms: 7a + -7a = 0
2a = -4 + 0
2a = -4

Divide each side by '2'.
a = -2

Simplifying
a = -2

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