exam Maths Puzzle Numerical Ability

i am unsure on how to work out this problem can you help please?

solve for x
2/3 e^4x=3 3/5

thank you!

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exam Other Question

please help me solve 4/5x=5/4

i know i need to flip the 4/5x but i keep getting confused i think the answer is
1.5 if it is im just confused on the check could you please show me how to solve this problem:
(x^2-6x+8)/(x-4)
Thanks for your help in advance.