Simplify (-3-9)/(8-(-7))

$\frac{- 3 - 9}{8 - (- 7)}$

Step 1

Subtract $9$ from $- 3$ .

$\frac{- 12}{8 - (- 7)}$

Step 2

Simplify the denominator.

Multiply $- 1$ by $- 7$ .

$\frac{- 12}{8 + 7}$

Add $8$ and $7$ .

$\frac{- 12}{15}$

Step 3

Reduce the expression by cancelling the common factors.

Cancel the common factor of $- 12$ and $15$ .

Factor $3$ out of $- 12$ .

$\frac{3 (- 4)}{15}$

Cancel the common factors.

Factor $3$ out of $15$ .

$\frac{3 \cdot - 4}{3 \cdot 5}$

Cancel the common factor.

$\frac{3 \cdot - 4}{3 \cdot 5}$

Rewrite the expression.

$\frac{- 4}{5}$

Move the negative in front of the fraction.

$- \frac{4}{5}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$- \frac{4}{5}$

Decimal Form:

$- 0.8$