← Simple equations lesson New set →

Class 7 Maths Worksheet: Simple Equations

Maths worksheets lesson 51: Simple equations · Set 532 · 40 sums
TalentJR

The method (Undo in reverse): ax + b = c → ax = c − b → x = (c − b) ÷ a. ax − b = c → ax = c + b. x/a + b = c → x/a = c − b → x = a × (c − b). a(x + b) = c → divide by a first: x + b = c ÷ a. Word problems: call the unknown x, write the equation, solve it, then check with the story.

NameDateTime takenScore ___ / 40
  1. 1.Solve: 4m − 18 = 38. What is m?
  2. 2.Solve: 7p − 59 = 25. What is p?
  3. 3.Meera’s mother is twice as old as Meera. Their ages add up to 33 years. How old is Meera?
  4. 4.Solve: 4n + 13 = 61. What is n?
  5. 5.Solve: 4p + 23 = 83. What is p?
  6. 6.Solve: 6x − 10 = 32. What is x?
  7. 7.Solve: n/4 + 20 = 24. What is n?
  8. 8.Solve: 5y + 7 = 42. What is y?
  9. 9.Arjun thinks of a number, multiplies it by 6 and then adds 27. The result is 51. What is the number?
  10. 10.Solve: y/8 + 17 = 22. What is y?
  11. 11.Meera thinks of a number, multiplies it by 6 and then adds 8. The result is 98. What is the number?
  12. 12.Zoya thinks of a number, multiplies it by 5 and then adds 29. The result is 44. What is the number?
  13. 13.Solve: 4m + 24 = 32. What is m?
  14. 14.Solve: x/6 + 6 = 14. What is x?
  15. 15.Solve: 6y + 5 = 17. What is y?
  16. 16.Solve: m/5 + 15 = 26. What is m?
  17. 17.Solve: 4(n + 1) = 36. What is n?
  18. 18.Arjun thinks of a number, multiplies it by 5 and then adds 6. The result is 81. What is the number?
  19. 19.Ishaan thinks of a number, multiplies it by 9 and then adds 3. The result is 84. What is the number?
  20. 20.Solve: 3(p + 1) = 9. What is p?
  21. 21.Tara’s mother is twice as old as Tara. Their ages add up to 24 years. How old is Tara?
  22. 22.Solve: x/9 + 8 = 13. What is x?
  23. 23.Solve: m/4 + 4 = 16. What is m?
  24. 24.Solve: 2p + 24 = 40. What is p?
  25. 25.Solve: 4n + 17 = 33. What is n?
  26. 26.Solve: 6t + 15 = 57. What is t?
  27. 27.Solve: n/7 + 3 = 17. What is n?
  28. 28.Solve: 3p + 5 = 26. What is p?
  29. 29.Solve: 9y + 30 = 120. What is y?
  30. 30.Vivaan thinks of a number, multiplies it by 7 and then adds 8. The result is 106. What is the number?
  31. 31.Solve: 7n + 26 = 54. What is n?
  32. 32.Solve: 4m − 3 = 1. What is m?
  33. 33.Solve: 2(t + 7) = 18. What is t?
  34. 34.Solve: 2p + 15 = 37. What is p?
  35. 35.Solve: m/8 + 10 = 15. What is m?
  36. 36.Solve: 2y − 11 = 15. What is y?
  37. 37.Dev thinks of a number, multiplies it by 7 and then adds 29. The result is 50. What is the number?
  38. 38.Solve: 5m − 3 = 2. What is m?
  39. 39.Solve: 8t + 19 = 27. What is t?
  40. 40.Pooja is 4 years older than a cousin. Their ages add up to 22 years. How old is the cousin?

Answer key

  1. 14
  2. 12
  3. 11
  4. 12
  5. 15
  6. 7
  7. 16
  8. 7
  9. 4
  10. 40
  11. 15
  12. 3
  13. 2
  14. 48
  15. 2
  16. 55
  17. 8
  18. 15
  19. 9
  20. 2
  21. 8
  22. 45
  23. 48
  24. 8
  25. 4
  26. 7
  27. 98
  28. 7
  29. 10
  30. 14
  31. 4
  32. 1
  33. 2
  34. 11
  35. 40
  36. 13
  37. 3
  38. 1
  39. 1
  40. 9

Free maths worksheets lessons, practice and worksheets at talentjr.in/maths-worksheets