9a=7a-(8)

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Solution for 9a=7a-(8) equation: 


Simplifying
9a = 7a + -1(8)

Multiply -1 * 8
9a = 7a + -8

Reorder the terms:
9a = -8 + 7a

Solving
9a = -8 + 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 = -8 + 7a + -7a

Combine like terms: 9a + -7a = 2a
2a = -8 + 7a + -7a

Combine like terms: 7a + -7a = 0
2a = -8 + 0
2a = -8

Divide each side by '2'.
a = -4

Simplifying
a = -4

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