2.1.1 An Introduction to Solving Equations

Question 1

Equation

Answer 1

two values are shown to be equal, or perfectly balanced, as signified by their being connected across an equal sign.

Question 2

Variable

Answer 2

an unknown value in an expression or equation that is represented usually by a letter

Question 3

x

Answer 3

letter most commonly used as a variable

Question 4

Constant

Answer 4

a regular number; e.g., 7, which always has the same value

Question 5

Solving an equation

Answer 5

finding the value(s) for the variable(s) that makes the equation true

Question 6

Proving an answer

Answer 6

Using the value you found in the equation, in place of the variable, to see whether the equation really
is balanced and whether the left side really has the same value as the right side even though they are probably not written using the same numbers