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The sum of a number and 12 is equal to 20. What is the number?

Practice Questions

Q1
The sum of a number and 12 is equal to 20. What is the number?
  1. 6
  2. 7
  3. 8
  4. 9

Questions & Step-by-Step Solutions

The sum of a number and 12 is equal to 20. What is the number?
  • Step 1: Identify the unknown number. Let's call it 'x'.
  • Step 2: Write down the equation based on the problem. The sum of the number and 12 is equal to 20, so we write: x + 12 = 20.
  • Step 3: To find 'x', we need to isolate it. We do this by subtracting 12 from both sides of the equation.
  • Step 4: After subtracting 12 from both sides, the equation looks like this: x + 12 - 12 = 20 - 12.
  • Step 5: Simplify both sides. The left side becomes 'x' and the right side becomes '8'. So, we have: x = 8.
  • Step 6: Therefore, the number is 8.
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