Evaluate -77+9-1/-1

$- 7 \cdot 7 + 9 \cdot \frac{- 1}{- 1}$

Step 1

Simplify each term.

Multiply $- 7$ by $7$ .

$- 49 + 9 \cdot \frac{- 1}{- 1}$

Cancel the common factor.

Dividing two negative values results in a positive value.

$- 49 + 9 \cdot \frac{1}{1}$

Cancel the common factor of $1$ .

Cancel the common factor.

$- 49 + 9 \cdot \frac{1}{1}$

Rewrite the expression.

$- 49 + 9 \cdot 1$

Multiply $9$ by $1$ .

$- 49 + 9$

Step 2

Add $- 49$ and $9$ .

$- 40$

Evaluate -7*7+9*-1/-1