To solve an equation 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 costs £2.

Each linear equation can be drawn as a line on a graph. The co-ordinate where the two lines intersect will give the solution of x and y. STEP 2 - The equations can be rearranged so that they both ...