Basic Math Examples

$k = 3 r - 4 s$

Step 1

Rewrite the equation as $3 r - 4 s = k$ .

$3 r - 4 s = k$

Step 2

Add $4 s$ to both sides of the equation.

$3 r = k + 4 s$

Step 3

Divide each term in $3 r = k + 4 s$ by $3$ and simplify.

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Step 3.1

Divide each term in $3 r = k + 4 s$ by $3$ .

$\frac{3 r}{3} = \frac{k}{3} + \frac{4 s}{3}$

Step 3.2

Simplify the left side.

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Step 3.2.1

Cancel the common factor of $3$ .

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Step 3.2.1.1

Cancel the common factor.

$\frac{3 r}{3} = \frac{k}{3} + \frac{4 s}{3}$

Step 3.2.1.2

Divide $r$ by $1$ .

$r = \frac{k}{3} + \frac{4 s}{3}$