Solve for X using the side-splitting theorem for a triangle: upper left= 6x-10, upper right= 5x, lower left= 4x+8, lower right=4x

set up the proportion

(6x-10)/(4x+8) = 5x/(4x)
the x's on the right side will cancel, then cross-multiply, it solves very nicely
I had x = 20

To solve for X using the side-splitting theorem for a triangle, we need to set up an equation involving the given side lengths and solve for X.

According to the side-splitting theorem, if a line parallel to one side of a triangle intersects the other two sides, it divides those sides proportionally.

In this case, the upper left segment is divided into two segments with lengths (6x-10) and (5x), and the lower left segment is divided into two segments with lengths (4x+8) and (4x).

To set up an equation, we can equate the ratios of the corresponding segments:

(6x-10) / (5x) = (4x+8) / (4x)

Cross-multiplying, we get:

(6x-10) * (4x) = (5x) * (4x+8)

Expanding both sides, we get:

(24x^2 - 40x) = (20x^2 + 40x)

Moving all the terms to one side, we get:

24x^2 - 40x - 20x^2 - 40x = 0

Combining like terms, we have:

4x^2 - 80x = 0

Factoring out 4x, we get:

4x(x - 20) = 0

Setting each factor equal to zero, we have:

4x = 0 or x - 20 = 0

Solving for x, we get:

x = 0 or x = 20

Therefore, there are two possible solutions for x: x = 0 and x = 20.