Equations with Variables

Front

What is a variable?

Back

A letter representing an unknown number in an equation.

Front

In the equation 2x + 3y = 19, what is the variable? Choose the best answer.

Back

Both x and y are variables

Front

What branch of mathematics deals with equations with variable?

Back

Algebra

Front

Which symbol is present in every equation?

Back

=

Front

How do we figure out the value of a variable?

Back

Isolate the variable on one side of the equals sign.

Front

How would you solve the equation 4x = 100?

Back

Divide each side by 4.

Front

In the equation 2x + 3y = 19, what is the constant?

Back

19

Front

Solve for x: 7x + 7 = 21

Back

x = 2

Front

What is the first step in solving the equation 2y - 11 = 25?

Back

Add 11 to both sides.

Front

Solve for k: 31 - 3k = 10

Back

k = 7