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  • Maths Online Test Class 7
  • What must be subtracted from 2a + b to get 2a - b
Multiple choice

What must be subtracted from 2a + b to get 2a - b

  1. 2b

  2. 4a

  3. 0

  4. 4a + 4b

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A Correct answer
Explanation

To find what must be subtracted, set up the equation: (2a + b) - x = (2a - b). Solving for x gives x = (2a + b) - (2a - b) = 2a + b - 2a + b = 2b.

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