exam Maths Puzzle Numerical Ability

In using esponential and logarithmic equations, could you help with these
problems?
#1 log(2x with power of 2 + 3x)=log(10x + 30).

#2 log lower case 7(5x) - log lower case 7(3

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exam Other Question

Hi,
Can you help me with this math problem?

17.) Solve the equation. Give an exact solution.
1n(3x-1)=1n 1 -1n (x-1)

The answer should be 4/3
The length of a rectangle is 8 inches more than twice its widths. If the perimeter of the rectangle is 64 in, find the width of the rectangle.