I. an analytical problem 1. Enunciated a gardener it plants bulbs of tulips in parterre. A third of those bulbs will be red tulips, the quarter will be white, one sixth yellow part will be black and another one sixth part. Finally, it plants 3 bulbs of pink tulips. How many bulbs have planted the gardener? 2. To select the incognito We say that x will be the total number of planted bulbs, being x, therefore, positive an integral number (natural).
Note: we choose an incognito and we imagined that we are preparations to know the answer. 3. To write a problem as an equation To write a problem as an equation means to write the literal statement like an algebraic expression. The gardener plants of the red tulips, of the white tulips, of the black tulips, the yellow tulips and finally he plants 3 tulips of pink color. Altogether, he has planted x bulbs of tulips.
We can express the total number of bulbs of a different form, by means of the sum of the number of bulbs of each color. It is to say, they have been planted, the following bulbs: This allows us to write the equation: That is to say, we establish an equality between the incognito (x), or total number of planted bulbs, and the sum of each one of the types of bulb. 4. Returning to the problem: verification of the result the pool must have 12 ms of length so that the areas of the way and the pool are equal. We can verify that the area of the pool is of 96 ms (8 12 = 96) and that the area of the way also is of 96 ms ((12 16) 96 = 96); in order to calculate the area of the way we have reduced him to the great rectangle the area of the pool. To see all the complete information in Writing the text of a problem like equation original Author and source of the article.