1. 2.7^x = 4

2. ln x - ln(3x - 5) = 2

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- Jan 15th 2008, 01:57 PMrlarachPlease solve these equations!
1. 2.7^x = 4

2. ln x - ln(3x - 5) = 2 - Jan 15th 2008, 02:09 PMmr fantastic
1. Take ln of both sides. Then use the rule to get a linear equation in x. Then solve for x. a decimal approximation you can get from any calculator with a ln button.

2. Combine the two logs on the left using the rule . Exponentiate both sides to the base e and then use the rule that . Now multiply both sides by (3x - 5) to get a linear equation in x:

Expand, re-arrange to group like terms and solve for x. a decimal approximation you can get from any calculator with an button.