Solve for b ab=-a

$a b = - a$

Divide each term in $a b = - a$ by $a$ .

$\frac{a b}{a} = \frac{- a}{a}$

Simplify the left side.

Cancel the common factor of $a$ .

Cancel the common factor.

$\frac{a b}{a} = \frac{- a}{a}$

Divide $b$ by $1$ .

$b = \frac{- a}{a}$

$b = \frac{- a}{a}$

$b = \frac{- a}{a}$

Simplify the right side.

Cancel the common factor of $a$ .

Cancel the common factor.

$b = \frac{- a}{a}$

Divide $- 1$ by $1$ .

$b = - 1$

$b = - 1$

$b = - 1$

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