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abdulrehman95a
 3 years ago
What is the solution to 3^4x7= 4^2x+3
abdulrehman95a
 3 years ago
What is the solution to 3^4x7= 4^2x+3

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rivermaker
 3 years ago
Best ResponseYou've already chosen the best response.2Is it \[3^{4}x  7 = 4 ^{2}x + 3\] or \[3^{4x}  7 = 4 ^{2x} + 3\]

abdulrehman95a
 3 years ago
Best ResponseYou've already chosen the best response.0explanations please?

rivermaker
 3 years ago
Best ResponseYou've already chosen the best response.2\[3^{4x7}=4^{2x+3}\] \[\frac{3^{4x}}{3^{7}}=4^{2x}\times {4^3}\] \[\frac{81^x}{2187} = 64\times16^x\] \[(\frac{81}{16})^x = 64 \times 2187\] Now takes logs on both sides

rivermaker
 3 years ago
Best ResponseYou've already chosen the best response.2\[x = \frac{(\log 64+\log2187)}{\log 81\log 16}\]
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