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How do you express one variable in terms of another in the equation \( x + y = 7 \)?
  • a)
    \( x = 7 + y \)
  • b)
    \( y = 7 - x \)
  • c)
    \( y = x - 7 \)
  • d)
    \( x = 7 - y \)
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
How do you express one variable in terms of another in the equation \(...
To express \( y \) in terms of \( x \) from the equation \( x + y = 7 \), you rearrange it to get \( y = 7 - x \). This expression is crucial for methods like substitution.
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