Trigonometry Examples

$(9 + y) \cdot 9 = 126$

Step 1

Divide each term in $(9 + y) \cdot 9 = 126$ by $9$ and simplify.

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Step 1.1

Divide each term in $(9 + y) \cdot 9 = 126$ by $9$ .

$\frac{(9 + y) \cdot 9}{9} = \frac{126}{9}$

Step 1.2

Simplify the left side.

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Step 1.2.1

Cancel the common factor of $9$ .

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Step 1.2.1.1

Cancel the common factor.

$\frac{(9 + y) \cdot 9}{9} = \frac{126}{9}$

Step 1.2.1.2

Divide $9 + y$ by $1$ .

$9 + y = \frac{126}{9}$

Step 1.3

Simplify the right side.

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Step 1.3.1

Divide $126$ by $9$ .

$9 + y = 14$

Step 2

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

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Step 2.1

Subtract $9$ from both sides of the equation.

$y = 14 - 9$

Step 2.2

Subtract $9$ from $14$ .

$y = 5$