← Simple equations lesson New set →

Class 7 Maths Worksheet: Simple Equations

Maths worksheets lesson 51: Simple equations · Set 730 · 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.Ishaan thinks of a number, multiplies it by 2 and then adds 2. The result is 24. What is the number?
  2. 2.Solve: t/6 + 19 = 33. What is t?
  3. 3.Gurpreet is 3 years older than a cousin. Their ages add up to 29 years. How old is the cousin?
  4. 4.Solve: 5(t + 1) = 45. What is t?
  5. 5.Kavya is 1 years older than a cousin. Their ages add up to 25 years. How old is the cousin?
  6. 6.Solve: 8p − 4 = 116. What is p?
  7. 7.Solve: 6y + 27 = 75. What is y?
  8. 8.Rahul thinks of a number, multiplies it by 8 and then adds 21. The result is 29. What is the number?
  9. 9.Solve: 7t + 30 = 72. What is t?
  10. 10.Solve: 7(y + 5) = 70. What is y?
  11. 11.Solve: 8m − 31 = 89. What is m?
  12. 12.Solve: 7p − 38 = 11. What is p?
  13. 13.Saanvi is 6 years older than a cousin. Their ages add up to 34 years. How old is the cousin?
  14. 14.Solve: m/2 + 14 = 22. What is m?
  15. 15.Solve: 6x + 28 = 76. What is x?
  16. 16.Solve: n/6 + 8 = 22. What is n?
  17. 17.Meera’s mother is four times as old as Meera. Their ages add up to 55 years. How old is Meera?
  18. 18.Solve: 9t − 38 = 25. What is t?
  19. 19.Solve: 7x + 30 = 72. What is x?
  20. 20.Solve: 7p + 14 = 84. What is p?
  21. 21.Solve: 2(n + 3) = 8. What is n?
  22. 22.Solve: 9m − 18 = 9. What is m?
  23. 23.Solve: 5(y + 4) = 35. What is y?
  24. 24.Isha’s mother is four times as old as Isha. Their ages add up to 30 years. How old is Isha?
  25. 25.Solve: 5(y + 1) = 15. What is y?
  26. 26.Solve: 9n − 33 = 39. What is n?
  27. 27.Solve: 7(m + 2) = 28. What is m?
  28. 28.Solve: 2n + 16 = 36. What is n?
  29. 29.Solve: 2x + 3 = 7. What is x?
  30. 30.Solve: 4(p + 8) = 52. What is p?
  31. 31.Solve: y/6 + 7 = 11. What is y?
  32. 32.Solve: 3(y + 2) = 24. What is y?
  33. 33.Solve: p/5 + 17 = 22. What is p?
  34. 34.Solve: 6(t + 7) = 72. What is t?
  35. 35.Solve: 7(x + 2) = 21. What is x?
  36. 36.Solve: 5x − 7 = 3. What is x?
  37. 37.Solve: 9y − 3 = 60. What is y?
  38. 38.Kabir’s mother is four times as old as Kabir. Their ages add up to 40 years. How old is Kabir?
  39. 39.Solve: 9x − 18 = 63. What is x?
  40. 40.Gurpreet’s mother is four times as old as Gurpreet. Their ages add up to 25 years. How old is Gurpreet?

Answer key

  1. 11
  2. 84
  3. 13
  4. 8
  5. 12
  6. 15
  7. 8
  8. 1
  9. 6
  10. 5
  11. 15
  12. 7
  13. 14
  14. 16
  15. 8
  16. 84
  17. 11
  18. 7
  19. 6
  20. 10
  21. 1
  22. 3
  23. 3
  24. 6
  25. 2
  26. 8
  27. 2
  28. 10
  29. 2
  30. 5
  31. 24
  32. 6
  33. 25
  34. 5
  35. 1
  36. 2
  37. 7
  38. 8
  39. 9
  40. 5

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