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Simplify. Express your answer using positive exponents.\newline7z47z7\frac{7z^4}{7z^7}

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Q. Simplify. Express your answer using positive exponents.\newline7z47z7\frac{7z^4}{7z^7}
  1. Write Expression: Write down the given expression.\newlineWe have the expression 7z47z7\frac{7z^4}{7z^7}. We need to simplify this expression by dividing the coefficients and subtracting the exponents of the like bases.
  2. Divide Coefficients: Divide the coefficients.\newlineSince the coefficients are the same 77\frac{7}{7}, they divide out to 11.\newline77=1\frac{7}{7} = 1
  3. Apply Quotient Rule: Apply the quotient rule for exponents.\newlineThe quotient rule states that when dividing like bases, you subtract the exponents: am/an=a(mn)a^m/a^n = a^{(m-n)}.\newlinez4/z7=z(47)=z3z^4/z^7 = z^{(4-7)} = z^{-3}
  4. Express Negative Exponent: Express the negative exponent as a positive exponent.\newlineSince we want to express our answer using positive exponents, we rewrite z3z^{-3} as 1z3\frac{1}{z^3}.
  5. Combine Results: Combine the results from Step 22 and Step 44.\newlineSince the coefficient is 11, it does not change the value of the expression, so we have:\newline1×1z3=1z31 \times \frac{1}{z^3} = \frac{1}{z^3}

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