writing and solving equations

Front

What is an equation?

Back

An equation is a mathematical statement that shows the equality of two expressions, typically containing a variable.

Front

What does it mean to solve an equation?

Back

To solve an equation means to find the value of the variable that makes the equation true.

Front

What is the first step in solving the equation x + 12 = 20?

Back

Subtract 12 from both sides of the equation.

Front

If x + 12 = 20, what is the value of x?

Back

x = 8.

Front

What is the opposite operation of addition?

Back

Subtraction.

Front

What is the opposite operation of subtraction?

Back

Addition.

Front

How do you write the equation for 'a number b increased by 3 is 7'?

Back

b + 3 = 7.

Front

What does 'difference' mean in mathematics?

Back

Difference means subtraction.

Front

What is the solution to the equation 15 = 8 + x?

Back

x = 7.

Front

What is the purpose of using variables in equations?

Back

Variables represent unknown values that we want to find.