8-1=1-a

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Solution for 8-1=1-a equation:


Simplifying
8 + -1 = 1 + -1a

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

Solving
7 = 1 + -1a

Solving for variable 'a'.

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

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

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

Add '-7' to each side of the equation.
7 + -7 + a = 1 + -7

Combine like terms: 7 + -7 = 0
0 + a = 1 + -7
a = 1 + -7

Combine like terms: 1 + -7 = -6
a = -6

Simplifying
a = -6

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