-a=9(a-10)

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Solution for -a=9(a-10) equation:


Simplifying
-1a = 9(a + -10)

Reorder the terms:
-1a = 9(-10 + a)
-1a = (-10 * 9 + a * 9)
-1a = (-90 + 9a)

Solving
-1a = -90 + 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
-1a + -9a = -90 + 9a + -9a

Combine like terms: -1a + -9a = -10a
-10a = -90 + 9a + -9a

Combine like terms: 9a + -9a = 0
-10a = -90 + 0
-10a = -90

Divide each side by '-10'.
a = 9

Simplifying
a = 9

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