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

abdulrehman95aBest ResponseYou've already chosen the best response.0
explanations please?
 2 years ago

rivermakerBest 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
 2 years ago

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