This document provides 15 linear equations for students to solve. The equations include adding and subtracting terms equal to or not equal to other terms, multiplying single terms and both sides by constants, and dividing both sides by constants. Solving these equations requires basic arithmetic skills and the ability to isolate the variable.

1. Ecuaciones lineales – Nivel 1
Resolver las siguientes ecuaciones:
1. X + 32 = 45
2. X - 12 = 50
3. 3.X = 36
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4. =6
2
5. X + 12 + 13 = 50 – 15
6. 2X + 41 = 13
7. 4X – 23 =37
8. 13 – X = 6
9. 15 + X – 11 = 25
10. 18 = X – 24
11. 25 + 42 = 2x + 17
12. X + 2X = 99
13. 4X – X + 21 = 54
14. 2.4.X = 10.80
15. X2 = 19 + 8