Solving for a Variable (+/-)

Front

What is the first step to solve the equation r - 18 = 27?

Back

Add 18 to both sides.

Front

What is the solution to the equation -4 + x = -7?

Back

x = -3

Front

What is the inverse operation needed to solve for p in the equation 765 = p - 254?

Back

Addition

Front

What is the solution of the equation 25 + k = 18?

Back

k = -7

Front

How do you solve the equation 38 = m - 15?

Back

Add 15 to both sides.

Front

What is the definition of a variable in mathematics?

Back

A symbol used to represent an unknown value.

Front

What does it mean to isolate a variable?

Back

To manipulate an equation so that the variable is on one side and all other terms are on the other.

Front

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

Back

To undo operations and isolate the variable.

Front

If you have the equation x + 5 = 12, what is the first step to solve for x?

Back

Subtract 5 from both sides.

Front

What is the solution to the equation 2y - 4 = 10?

Back

y = 7.