Basic Math Examples

$3 y + 10 = 2 y - 21$

Step 1

Move all terms containing $y$ to the left side of the equation.

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Step 1.1

Subtract $2 y$ from both sides of the equation.

$3 y + 10 - 2 y = - 21$

Step 1.2

Subtract $2 y$ from $3 y$ .

$y + 10 = - 21$

Step 2

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

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Step 2.1

Subtract $10$ from both sides of the equation.

$y = - 21 - 10$

Step 2.2

Subtract $10$ from $- 21$ .

$y = - 31$