Basic Math Examples

$\frac{7!}{(7 - 4)!}$

Step 1

Subtract $4$ from $7$ .

$\frac{7!}{(3)!}$

Step 2

Rewrite $7!$ as $7 \cdot 6 \cdot 5 \cdot 4 \cdot 3!$ .

$\frac{7 \cdot 6 \cdot 5 \cdot 4 \cdot 3!}{(3)!}$

Step 3

Cancel the common factor of $3!$ .

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Step 3.1

Cancel the common factor.

$\frac{7 \cdot 6 \cdot 5 \cdot 4 \cdot 3!}{(3)!}$

Step 3.2

Divide $7 \cdot 6 \cdot 5 \cdot 4$ by $1$ .

$7 \cdot 6 \cdot 5 \cdot 4$

Step 4

Multiply $7 \cdot 6 \cdot 5 \cdot 4$ .

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Step 4.1

Multiply $7$ by $6$ .

$42 \cdot 5 \cdot 4$

Step 4.2

Multiply $42$ by $5$ .

$210 \cdot 4$

Step 4.3

Multiply $210$ by $4$ .

$840$