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  • Solving Equations (Key Stage 1 - 4)
  • 21 added to 7 times a number is 77. Which of the followin...
Multiple choice

21 added to 7 times a number is 77. Which of the following is correct equation for this statement?

  1. 21x + 7 = 77

  2. 77 + 21x = 7

  3. 77 = 21x - 7

  4. 7x + 21 = 77

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let the number be x. 7x + 21 = 77

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