exam Maths Puzzle Numerical Ability

Simplify: No negative exponents and no decimal answers.
(27a^3b^2c^5/45a^4c^2)^3

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exam Other Question

i dont know how to solve any of these problems..i really need help..i cant fail math..please help i have a 5 grade test simplify (show your work)

17.23/0.035 (to one decimal place)

Thanks for the help