Basic Math Examples

$(9 a) - (7 - 7 (7 a - 3))$

Step 1

Simplify each term.

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Step 1.1

Apply the distributive property.

$9 a - (7 - 7 (7 a) - 7 \cdot - 3)$

Step 1.2

Multiply $7$ by $- 7$ .

$9 a - (7 - 49 a - 7 \cdot - 3)$

Step 1.3

Multiply $- 7$ by $- 3$ .

$9 a - (7 - 49 a + 21)$

$9 a - (7 - 49 a + 21)$

Step 2

Add $7$ and $21$ .

$9 a - (- 49 a + 28)$

Step 3

Apply the distributive property.

$9 a - (- 49 a) - 1 \cdot 28$

Step 4

Multiply $- 49$ by $- 1$ .

$9 a + 49 a - 1 \cdot 28$

Step 5

Multiply $- 1$ by $28$ .

$9 a + 49 a - 28$

Step 6

Add $9 a$ and $49 a$ .

$58 a - 28$

Step 7

Factor $2$ out of $58 a - 28$ .

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Step 7.1

Factor $2$ out of $58 a$ .

$2 (29 a) - 28$

Step 7.2

Factor $2$ out of $- 28$ .

$2 (29 a) + 2 (- 14)$

Step 7.3

Factor $2$ out of $2 (29 a) + 2 (- 14)$ .

$2 (29 a - 14)$

$2 (29 a - 14)$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$