Solving for a Variable (+/-)

Front

How do you isolate a variable in an equation?

Back

Use inverse operations to 'undo' the operations applied to the variable.

Front

What is the first step to solve the equation 38 = m - 15?

Back

Add 15 to both sides.

Front

What is the solution to the equation m - (-3) = 11?

Back

8

Front

What is the inverse operation of subtraction?

Back

Addition.

Front

What is the inverse operation of addition?

Back

Subtraction.

Front

How do you solve for x in the equation -13 = x - 9?

Back

Add 9 to both sides to get x = -4.

Front

What does it mean to 'undo' an operation in algebra?

Back

To apply the inverse operation to isolate the variable.

Front

What is the solution to the equation 765 = p - 254?

Back

Add 254 to both sides to find p = 1019.

Front

What is the purpose of using inverse operations in solving equations?

Back

To isolate the variable and find its value.

Front

What is the solution to the equation 2x + 3 = 11?

Back

Subtract 3 from both sides, then divide by 2 to get x = 4.