Basic Math Examples

$2 (s) - 3 \cdot 4 = 20$

Step 1

Multiply $- 3$ by $4$ .

$2 s - 12 = 20$

Step 2

Move all terms not containing $s$ to the right side of the equation.

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Step 2.1

Add $12$ to both sides of the equation.

$2 s = 20 + 12$

Step 2.2

Add $20$ and $12$ .

$2 s = 32$

Step 3

Divide each term in $2 s = 32$ by $2$ and simplify.

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Step 3.1

Divide each term in $2 s = 32$ by $2$ .

$\frac{2 s}{2} = \frac{32}{2}$

Step 3.2

Simplify the left side.

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Step 3.2.1

Cancel the common factor of $2$ .

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Step 3.2.1.1

Cancel the common factor.

$\frac{2 s}{2} = \frac{32}{2}$

Step 3.2.1.2

Divide $s$ by $1$ .

$s = \frac{32}{2}$

Step 3.3

Simplify the right side.

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Step 3.3.1

Divide $32$ by $2$ .

$s = 16$