1=a-9

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Solution for 1=a-9 equation:


Simplifying
1 = a + -9

Reorder the terms:
1 = -9 + a

Solving
1 = -9 + a

Solving for variable 'a'.

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

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

Combine like terms: a + -1a = 0
1 + -1a = -9 + 0
1 + -1a = -9

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

Combine like terms: 1 + -1 = 0
0 + -1a = -9 + -1
-1a = -9 + -1

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

Divide each side by '-1'.
a = 10

Simplifying
a = 10

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