Basic Math Examples

$- 7 - 5 - 4$ $0$ $2$ $2$

Step 1

Subtract $5$ from $- 7$ .

$- 12 - 4, 0, 2, 2$

Step 2

Subtract $4$ from $- 12$ .

$- 16, 0, 2, 2$

Step 3

The mean of a set of numbers is the sum divided by the number of terms.

$\frac{- 16 + 0 + 2 + 2}{4}$

Step 4

Cancel the common factor of $- 16 + 0 + 2 + 2$ and $4$ .

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Step 4.1

Factor $2$ out of $- 16$ .

$\frac{2 \cdot - 8 + 0 + 2 + 2}{4}$

Step 4.2

Factor $2$ out of $0$ .

$\frac{2 \cdot - 8 + 2 \cdot 0 + 2 + 2}{4}$

Step 4.3

Factor $2$ out of $2 \cdot - 8 + 2 \cdot 0$ .

$\frac{2 \cdot (- 8 + 0) + 2 + 2}{4}$

Step 4.4

Factor $2$ out of $2$ .

$\frac{2 \cdot (- 8 + 0) + 2 \cdot 1 + 2}{4}$

Step 4.5

Factor $2$ out of $2 \cdot (- 8 + 0) + 2 (1)$ .

$\frac{2 \cdot (- 8 + 0 + 1) + 2}{4}$

Step 4.6

Factor $2$ out of $2$ .

$\frac{2 \cdot (- 8 + 0 + 1) + 2 (1)}{4}$

Step 4.7

Factor $2$ out of $2 \cdot (- 8 + 0 + 1) + 2 (1)$ .

$\frac{2 \cdot (- 8 + 0 + 1 + 1)}{4}$

Step 4.8

Cancel the common factors.

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Step 4.8.1

Factor $2$ out of $4$ .

$\frac{2 \cdot (- 8 + 0 + 1 + 1)}{2 (2)}$

Step 4.8.2

Cancel the common factor.

$\frac{2 \cdot (- 8 + 0 + 1 + 1)}{2 \cdot 2}$

Step 4.8.3

Rewrite the expression.

$\frac{- 8 + 0 + 1 + 1}{2}$

Step 5

Simplify the numerator.

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Step 5.1

Add $- 8$ and $0$ .

$\frac{- 8 + 1 + 1}{2}$

Step 5.2

Add $- 8$ and $1$ .

$\frac{- 7 + 1}{2}$

Step 5.3

Add $- 7$ and $1$ .

$\frac{- 6}{2}$

Step 6

Divide $- 6$ by $2$ .

$- 3$