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Bumek [7]
3 years ago
15

343^x = 49^4-x what is the value of x

Mathematics
2 answers:
yawa3891 [41]3 years ago
8 0

Answer:

x={\frac{8}{5}

Step-by-step explanation:

The given equation is:

343^x=49^{4-x}

Create equivalent expressions in the equation that all have equal bases, thus

7^{3(x)}=7^{2(4-x)}

Since the bases are the same, then two expressions are only equal if the exponents are also equal, thus

3(x)=2(4-x)

3x=8-2x

5x=8

x={\frac{8}{5}

which is the required value of x.

pychu [463]3 years ago
5 0
As a fraction it would be 8/5 
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Read 2 more answers
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