Question

What would be the answer to this ? Solve. 5x=15

Answer 1

Interpretation 1:

$5x = 15$

Divide both sides by 5:

$\implies \boxed{x = 3}$

(Which is the final answer.)

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Interpretation 2:

$5^{x}=15$

Take logarithm to the base 5 on both sides:

$\implies log_5(5^{x})=log_5(15)\\\implies x=log_5 (15) \\\implies x= \frac{ln(15)}{ln(5)} \\\implies \boxed{x≈1.683}$

(Which is a thing too!)

$\huge\mathfrak\colorbox{white}{}$

P. S.: Now please don't tell me that this is a PhD level question and this is referring to the Knuth's Up-Arrow Notation. Which translates the question into something like: $^{5}x=15$

Answer 2

Answer:

x = 3

Step-by-step explanation:

what would be the answer to this ?

Solve.

5x=15

x = 15 : 5

x = 3

--------------

check

5 * 3 = 15

the answer is good