V stands for volume l for length w for width and h for height. These are basically placed on the centre of the page and the equations are important ones that deserve to be highlighted. X 2 4 For x5 we get 524 which is not true so x5 is not a solution.
For x9 we get 924 which is not true so x9 is not a solution.
This equation states that 12 is equal to the sum of 7 and 5 which is obviously true. For instance 3x 5 14 is an equation in which 3x 5 and 14 are two. V stands for volume l for length w for width and h for height. We must multiply every part of the equation inside parentheses by 2 and this example shows that happening in the second step where its gone from x 5 2 to 2 x 2 5.