Trigonometry Examples

$x - 1 = 2 y$

Step 1

Rewrite the equation as $2 y = x - 1$ .

$2 y = x - 1$

Step 2

Divide each term in $2 y = x - 1$ by $2$ and simplify.

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Step 2.1

Divide each term in $2 y = x - 1$ by $2$ .

$\frac{2 y}{2} = \frac{x}{2} + \frac{- 1}{2}$

Step 2.2

Simplify the left side.

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Step 2.2.1

Cancel the common factor of $2$ .

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Step 2.2.1.1

Cancel the common factor.

$\frac{2 y}{2} = \frac{x}{2} + \frac{- 1}{2}$

Step 2.2.1.2

Divide $y$ by $1$ .

$y = \frac{x}{2} + \frac{- 1}{2}$

Step 2.3

Simplify the right side.

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Step 2.3.1

Move the negative in front of the fraction.

$y = \frac{x}{2} - \frac{1}{2}$

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