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anonymous

  • 5 years ago

20+10x=60+6x

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  1. sandra
    • 5 years ago
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    20+ 10x -20 = 60 + 6x -20 10x = 40 + 6x 10x - 6x = 40 + 6x -6x 4x = 40

  2. sandra
    • 5 years ago
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    can you do the last step?

  3. anonymous
    • 5 years ago
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    yeah

  4. sandra
    • 5 years ago
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    ok great =). the key rule is, you can perform any mathematical operation to both sides of an equation and have the equation still be true

  5. sandra
    • 5 years ago
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    so if you look above, you'll see that's all I did - I added or subtracted the same thing from both sides

  6. sandra
    • 5 years ago
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    the end goal is to get x all alone by itself

  7. sandra
    • 5 years ago
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    the the final thought process should be, how do I make 4x into just x?

  8. sandra
    • 5 years ago
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    and the answer is, you divide by 4

  9. sandra
    • 5 years ago
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    so since you divided 4x by 4, you have to divide the other side by 4 too to get the answer

  10. sandra
    • 5 years ago
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    so 4x = 40 4x/4 = 40/4 x = 10

  11. sandra
    • 5 years ago
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    and walla

  12. anonymous
    • 5 years ago
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    thanx

  13. sandra
    • 5 years ago
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    np!

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