Apuntes de A. Cabañó Matemáticas ECUACIONES DE 1º GRADO. 1. 2x-34=-20 Sol: x=7 2. 9x+8=7x+6 Sol: x=-1 3. 4x+3=3x+5 Sol: x=2 4. 7x+9=3+9x Sol: x=3 5. x-8=2x-11 Sol: x=3 6. x+1=2x-7 Sol: x=8 7. 6x+6=4+8x Sol: x=1 8. 9+9x=17+5x Sol: x=2 9. 2x+3=3x Sol: x=3 10....
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Apuntes de A. Cabañó Matemáticas ECUACIONES DE 1º GRADO. 1. 2x-34=-20 Sol: x=7 2. 9x+8=7x+6 Sol: x=-1 3. 4x+3=3x+5 Sol: x=2 4. 7x+9=3+9x Sol: x=3 5. x-8=2x-11 Sol: x=3 6. x+1=2x-7 Sol: x=8 7. 6x+6=4+8x Sol: x=1 8. 9+9x=17+5x Sol: x=2 9. 2x+3=3x Sol: x=3 10. 25-2x=3x+20 Sol: x=1 11. 4x+1=3x+3 Sol: x=2 12. 5x-3=10x-6 Sol: x=3/5 13. 1+8x=-16x+31 Sol: x=5/4 14. 5x-11=15x-19 Sol: x=4/5 15. 12x-48=-15x-30 Sol: x=2/3 16. 2x+17=3x+7 Sol: x=10 17. 10-5x=x-2 Sol: x=2 18. 70-3x=4x Sol: x=10 19. 48-3x=5x Sol: x=6 20. -4x+30=-3x-10 Sol: x=40 21. 10x-15=4x+27 Sol: x=7 22. x-3(x-2)=6x-2 Sol: x=1 23. 3x+1=6x-8 Sol: x=3 24. 3x-7=2(x+1) Sol: x=9 25. 47-3x=5+11x Sol: x=3 26. 2(2+4x)=3+12x Sol: x=1/4 27. 30-9x=-7x+21 Sol: x=9/2 28. 5x=7(5x-3)+3 Sol: x=3/5 29. 3x-10=2x+1 Sol: x=11 30. 2(x-5)=3x-17 Sol: x=7 31. 25-2x=3x-35 Sol: x=12 32. 2+5(x-13)=x-3 Sol: x=15 33. 75-5x=3x+3 Sol: x=9 34. 2x-1=3(2x-15) Sol: x=11 35. 5+8x=2x+20 Sol: x=5/2 36. 2(x-2)=-(4-x) Sol: x=0 37. 2y-3=y+5 Sol: y=8 38. 2(3x-49)=-x+14 Sol
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