Equations often contain algebra ... we use the inverse operations to undo the equation. STEP 5 - You’ve found the answer x = 2. Always remember to put the units back in. So 1 loaf of bread ...

An algebraic ... the solution. STEP 1 - Write out the problem. In this case 3 hats and 1 scarf costs £17. If the scarf is £5, how much is 1 hat? Image caption, STEP 2 - You can draw a bar ...