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-2×◻÷-4=-21

−2×□÷−4=−21 -2 \times \square \div-4=-21

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Full solution

Q. −2×□÷−4=−21 -2 \times \square \div-4=-21
  1. Write Equation, Identify Variable: Write down the equation and identify the variable.\newlineThe equation is −2×□÷−4=−21-2\times\square\div-4=-21. We need to find the value of the variable represented by the square box (□\square).
  2. Multiply by −4-4: Multiply both sides of the equation by −4-4 to eliminate the division.\newline−2×□÷−4×−4=−21×−4-2\times\square\div-4 \times -4 = -21 \times -4\newlineThis simplifies to −2×□=84-2\times\square = 84.
  3. Divide by −2-2: Divide both sides of the equation by −2-2 to solve for the variable.\newline−2×□÷−2=84÷−2-2\times\square \div -2 = 84 \div -2\newlineThis simplifies to □=−42\square = -42.

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