exam Maths Puzzle Numerical Ability

Find the product or quotient. Write your answer using only positive exponents.

38. 12^-4/12^-5

Any help with this equation woul be GREATLY</b> appreciated.

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exam Other Question

Solve.
4(x + 2) - 3x = x - 6
Please help me simplify the expression:

13[6^2/(5^2-4^2)+9], I got 169 as the answer.