Q4 No links pls experts This isn't easy as it seems! Please! Q 4 In △ABC, DE∥BC - Maths - Triangles

Question

Q4
No links pls experts
This isn't easy as it seems! Please!
Q 4 In △ A B C ,   D E ∥ B C so that AD = (7x - 4)
cm, AE = (5x - 2) cm, DE = (3x + 4) cm and EC = 3x cm Then find the
value of x

Neha Sethi · Accepted Answer

Dear student
Given: DE∥BC
There seems to be mistake in the question, Instead of DE=3x+4 it will be DB=3x+4So, BPT theorem
ADDB=AEEC⇒7x-43x+4=5x-23x⇒21x2-12x=15x2-6x+20x-8⇒6x2-26x+8=0⇒3x2-13x+4=0⇒3x2-12x-x+4=0⇒3xx-4-1x-4=0⇒3x-1x-4=0⇒3x-1=0 or x-4=0⇒x=13 or x=4
Regards

Q4. No links pls experts. This isn't easy as it seems! Please! Q.4. In △ A B C , D E ∥ B C so that AD = (7x - 4) cm, AE = (5x - 2) cm, DE = (3x + 4) cm and EC = 3x cm. Then find the value of x.

Q4.
No links pls experts.
This isn't easy as it seems! Please!
Q.4. In $△ A B C, D E ∥ B C$ so that AD = (7x - 4) cm, AE = (5x - 2) cm, DE = (3x + 4) cm and EC = 3x cm. Then find the value of x.