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brandon4321

  • 3 years ago

solve 5x + 6 = 2x – 3

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  1. SheldonEinstein
    • 3 years ago
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    First of all we have : \(5x + 6 = 2x -3\) Transpose (-3) to Left hand side, do you know how ?

  2. brandon4321
    • 3 years ago
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    no

  3. SheldonEinstein
    • 3 years ago
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    see : I have 5x +6 = 2x -3, i want to remove -3 from right hand side so I would add 3 both sides: \(5x + 6 + 3 = 2x - 3+3\) Can you tell me what is -3+3?

  4. brandon4321
    • 3 years ago
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    -1

  5. SheldonEinstein
    • 3 years ago
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    No! See... -3 + 3 = 3 -3 what is 3-3 ?

  6. brandon4321
    • 3 years ago
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    0

  7. SheldonEinstein
    • 3 years ago
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    yes so -3+3 is also __ zero

  8. SheldonEinstein
    • 3 years ago
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    Now we have : \(5x + 6 +3 = 2x \) \(5x + 9 = 2x\) Now we will remove 5x from Left hand side, by subtracting 5x both sides.

  9. SheldonEinstein
    • 3 years ago
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    \(5x + 9 -5x = 2x - 5x\) What is 2x - 5x ?

  10. brandon4321
    • 3 years ago
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    i don't get it math gives me a headache and throws me off

  11. SheldonEinstein
    • 3 years ago
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    I have 5x + 9 = 2x Now I would subtract 5x both sides \(\color{blue}{(5x+9)} - \color{red}{5x} = \color{blue}{2x} - \color{red}{5x}\) getting it?

  12. brandon4321
    • 3 years ago
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    :/ no

  13. SheldonEinstein
    • 3 years ago
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    You have two apples in one box and 3 apples in other box. What if you want to put those 2 apples to the second box? What would u do?

  14. brandon4321
    • 3 years ago
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    im completly lost

  15. SheldonEinstein
    • 3 years ago
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    Prefer this : http://www.purplemath.com/modules/solvelin.htm

  16. pingube
    • 3 years ago
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    what do you mean solve this? finding x? or simplyfying this equation?

  17. kelliegirl33
    • 3 years ago
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    5x + 9 - 5x = 2x - 5x (combine like terms) 9 = - 3x (now divide by -3) 9/-3 = -3x/-3 (combine like terms) -3 = x check.. 5x + 9 - 5x = 2x - 5x 5(-3) +9 - 5(-3) = 2(-3) - 5(-3) -15 + 9 + 15 = - 6 + 15 9 = 9 (correct) x = - 3 :)

  18. TeenaMathew
    • 3 years ago
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    |dw:1365342876277:dw|

  19. TeenaMathew
    • 3 years ago
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    hope that made sense. if you have any questions understanding what i did ask me :)

  20. TeenaMathew
    • 3 years ago
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    |dw:1365343237175:dw|

  21. TeenaMathew
    • 3 years ago
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    sorry made a mistake the answer should be x=-3. idk if its too messy for you

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