Question

Solve the proportion
7/5=x/3

Answer 1

Start with

$\dfrac{7}{5}=\dfrac{x}{3}$

Multiply both sides by 3:

$\dfrac{21}{5}=x$

Recall that 21/5=4.2 to claim the correct answer.

Answer 2

Answer:

The answer is 21/5 or 5/21.

Step-by-step explanation:

In order to remove the  3  by which the unknown  "x " is divided by, you must multiply by both sides of the equation by  3 , thus isolating  "x ":

Like this:

$\frac{7}{5}$ x 3 = $\frac{x}{3}$ x 3

If both sides of the equation were not multiplied by 3, we would not maintain equality across the equation, thus reaching an incorrect answer.

Therefore, simplifying the above you get:

$x= \frac{5}{21}$

Hope This Helps!

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