an equation is made up of two expressions and an equals sign.

there are several types of equations and several methods of solving them.

when "guessing" the answer to an equation always check the answer by substituting it back into the original equation.

when solving equations using mathematical methods each step should be written on a new line.

Key Skills

  • solve simple equations.
  • solve word problems involving equations.


equation, linear equationexpressionvariable, solution set.