Write equations for the following situations. Use N for the unknown number. Do not solve the equations, math homework help

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Write equations for the following situations. Use N for the unknown number. Do not solve the equations.

  1. Three times a number is 180.

  2. A number increased by 13 equals 25.

  3. Seven less than a number is 5.

  4. Fifty-seven decreased by 3 times a number is 21.

Solve for the unknown number:

  1. C + 40 = 90

  2. 29 + M = 44

  3. D − 77 = 98

  4. 7N = 63

  6. 3Q + 4Q + 2Q + 108

  7. H + 5H + 3 = 57

  8. 2(N − 3) = 62

  10. E − 32 = 41

  11. 5(2T − 2) = 120

  12. 12W − 5W = 98

  13. 49 − X = 37

  14. 12(V + 2) = 84

  15. 7D + 4 = 5D + 14

  16. 7(T − 2) = 2T − 9

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