Solve for a 17=9-a

Math
17=9-a
Rewrite the equation as 9-a=17.
9-a=17
Move all terms not containing a to the right side of the equation.
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Subtract 9 from both sides of the equation.
-a=17-9
Subtract 9 from 17.
-a=8
-a=8
Multiply each term in -a=8 by -1
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Multiply each term in -a=8 by -1.
(-a)⋅-1=8⋅-1
Multiply (-a)⋅-1.
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Multiply -1 by -1.
1a=8⋅-1
Multiply a by 1.
a=8⋅-1
a=8⋅-1
Multiply 8 by -1.
a=-8
a=-8
Solve for a 17=9-a

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