Which are possible first steps in solving the equation 4x + 3 = 18?

x = 3.75

Step-by-step explanation:

4x + 3 = 18

The first step in this equation is to subtract 3 from both sides. (Or subtract 18 form both sides but then we would still have to put it on the other side)

4x + 3 - 3 = 18 - 3

4x = 15

Then divide by 4

x = 15/4 = 3.75

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584