Now, to answer this question, we must get x on its own at either side. x + 5 is on the left hand side, so to get X in its own, we must get rid of the 5. To eliminate the 5 but keep the equation balanced, we can take 5 from both sides of the equation. So x+5-5 = -8-5. This goes to X = -13, because 5-5 is 0 and -8-5 is -13.
9:7 Ratios are always simplified so by dividing both 18 and 14 by 2 you get 9 and seven. Because yellow triangles is stated first the 9 is put before the 7 blue triangles.
