$\bf 3^{4x}=27^{x-3}\implies 3^{4x}=(3^3)^{x-3}\stackrel{~\hfill \textit{same base, the exponents must also be the same}}{\implies 3^{4x}=3^{3(x-3)}\implies 3^{4x}=3^{3x-9}\qquad } \\\\\\ 4x=3x-9\implies x=-9$

5 0

4 years ago

An equation is shown 5x + 3x = 5x + 15/2. What value of 3x makes the equation true?

pantera1 [17]

Note that 5x appears on both sides of this equation. Delete 5x from each side. This leaves us with 3x = 15/2. Dividing both sides by 3 results in x = 5/2 (ans)

7 0

4 years ago

What is seven times nine

Westkost [7]

The answer is 7x9=63

7 0

3 years ago

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