Basic Math Examples

$(A - 5) (A + 7) = 0$

Step 1

If any individual factor on the left side of the equation is equal to $0$ , the entire expression will be equal to $0$ .

$A - 5 = 0$

$A + 7 = 0$

Step 2

Set $A - 5$ equal to $0$ and solve for $A$ .

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Step 2.1

Set $A - 5$ equal to $0$ .

$A - 5 = 0$

Step 2.2

Add $5$ to both sides of the equation.

$A = 5$

Step 3

Set $A + 7$ equal to $0$ and solve for $A$ .

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Step 3.1

Set $A + 7$ equal to $0$ .

$A + 7 = 0$

Step 3.2

Subtract $7$ from both sides of the equation.

$A = - 7$

Step 4

The final solution is all the values that make $(A - 5) (A + 7) = 0$ true.

$A = 5, - 7$