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Solve the following linear equations.

Mathematics

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Step-by-step solution

24 steps

Here are the solutions to the linear equations:

1. 2x+5=−12x+5=-1

  1. Subtract 5 from both sides of the equation.

    2x+5−5=−1−52x+5-5 = -1-5 2x=−62x = -6
  2. Divide both sides by 2.

    2x2=−62\frac{2x}{2} = \frac{-6}{2} x=−3x = -3

    The final answer is −3\boxed{-3}.

    2. 5x−4=−95x-4=-9

  3. Add 4 to both sides of the equation.

    5x−4+4=−9+45x-4+4 = -9+4 5x=−55x = -5
  4. Divide both sides by 5.

    5x5=−55\frac{5x}{5} = \frac{-5}{5} x=−1x = -1

    The final answer is −1\boxed{-1}.

    3. 2x+35=5\frac{2x+3}{5}=5

  5. Multiply both sides of the equation by 5.

    5×2x+35=5×55 \times \frac{2x+3}{5} = 5 \times 5 2x+3=252x+3 = 25
  6. Subtract 3 from both sides.

    2x+3−3=25−32x+3-3 = 25-3 2x=222x = 22
  7. Divide both sides by 2.

    2x2=222\frac{2x}{2} = \frac{22}{2} x=11x = 11

    The final answer is 11\boxed{11}.

    4. 5x−42=3\frac{5x-4}{2}=3

  8. Multiply both sides of the equation by 2.

    2×5x−42=3×22 \times \frac{5x-4}{2} = 3 \times 2 5x−4=65x-4 = 6
  9. Add 4 to both sides.

    5x−4+4=6+45x-4+4 = 6+4 5x=105x = 10
  10. Divide both sides by 5.

    5x5=105\frac{5x}{5} = \frac{10}{5} x=2x = 2

    The final answer is 2\boxed{2}.

    5. x4−5=x−2\frac{x}{4}-5=x-2

  11. Add 5 to both sides of the equation.

    x4−5+5=x−2+5\frac{x}{4}-5+5 = x-2+5 x4=x+3\frac{x}{4} = x+3
  12. Subtract xx from both sides.

    x4−x=x+3−x\frac{x}{4}-x = x+3-x x4−4x4=3\frac{x}{4}-\frac{4x}{4} = 3 −3x4=3-\frac{3x}{4} = 3
  13. Multiply both sides by 4.

    4×(−3x4)=3×44 \times \left(-\frac{3x}{4}\right) = 3 \times 4 −3x=12-3x = 12
  14. Divide both sides by -3.

    −3x−3=12−3\frac{-3x}{-3} = \frac{12}{-3} x=−4x = -4

    The final answer is −4\boxed{-4}.

    6. −49x+6=1−x-\frac{4}{9}x+6=1-x

  15. Subtract 6 from both sides of the equation.

    −49x+6−6=1−x−6-\frac{4}{9}x+6-6 = 1-x-6 −49x=−x−5-\frac{4}{9}x = -x-5
  16. Add xx to both sides.

    −49x+x=−x−5+x-\frac{4}{9}x+x = -x-5+x −49x+99x=−5-\frac{4}{9}x+\frac{9}{9}x = -5 59x=−5\frac{5}{9}x = -5
  17. Multiply both sides by 95\frac{9}{5}.

    95×59x=−5×95\frac{9}{5} \times \frac{5}{9}x = -5 \times \frac{9}{5} x=−9x = -9

    The final answer is −9\boxed{-9}.

    7. 3(x+1)=2x−43(x+1)=2x-4

  18. Distribute the 3 on the left side of the equation.

    3x+3=2x−43x+3 = 2x-4
  19. Subtract $2x$ from both sides.

    3x+3−2x=2x−4−2x3x+3-2x = 2x-4-2x x+3=−4x+3 = -4
  20. Subtract 3 from both sides.

    x+3−3=−4−3x+3-3 = -4-3 x=−7x = -7

    The final answer is −7\boxed{-7}.

    8. 4(x−3)=2−3x4(x-3)=2-3x

  21. Distribute the 4 on the left side of the equation.

    4x−12=2−3x4x-12 = 2-3x
  22. Add $3x$ to both sides.

    4x−12+3x=2−3x+3x4x-12+3x = 2-3x+3x 7x−12=27x-12 = 2
  23. Add 12 to both sides.

    7x−12+12=2+127x-12+12 = 2+12 7x=147x = 14
  24. Divide both sides by 7.

    7x7=147\frac{7x}{7} = \frac{14}{7} x=2x = 2

    The final answer is 2\boxed{2}.

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