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Lerok [7]
3 years ago
7

What is the value of x?

Mathematics
1 answer:
Anit [1.1K]3 years ago
7 0

Answer:

Step-by-step explanation:

Set this up according to the Triangle Proportionality Theorem:

\frac{3x}{4x}=\frac{3x+7}{5x-8}

Cross multiply to get

3x(5x-8)=4x(3x+7)

and simplify to get

15x^2-24x=12x^2+28x

Get everything on one side of the equals sign and solve for x:

3x^2-52x=0 and

x(3x-52)=0

By the Zero Product Property,

x = 0 or 3x - 52 = 0 so x = 17 1/3

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