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anonymous

  • 5 years ago

Solve using the addition principle t-7=18

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  1. anonymous
    • 5 years ago
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    okay. lets see, t -7 =18 what should you add to t-7 to get t+0?

  2. anonymous
    • 5 years ago
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    in other words, what do you add to -7 to make it 0?

  3. anonymous
    • 5 years ago
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    u set it up like t-7 +7

  4. anonymous
    • 5 years ago
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    okay very good. so if you add 7 to the left hand side of the equation, you must add it to the right hand side also to make the equation equal. so t - 7+7 = 18+7

  5. anonymous
    • 5 years ago
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    so the answer will be T=25

  6. anonymous
    • 5 years ago
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    yes. that is right.

  7. anonymous
    • 5 years ago
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    now what if a problem is 4=b-4

  8. anonymous
    • 5 years ago
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    same thing

  9. anonymous
    • 5 years ago
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    use the same principle. exactly. it is the same thing

  10. anonymous
    • 5 years ago
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    in the earlier problem, you found out t = 25.

  11. anonymous
    • 5 years ago
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    right

  12. anonymous
    • 5 years ago
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    so this set up will be like 4+4 = b-4+4

  13. anonymous
    • 5 years ago
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    your equation was t - 7 = 18 so what is t?. if you put t = 25, you get 25 minus 7 is 18. which is exactly right. similarly in your new problem, it is: some number b - 4 gives 4

  14. anonymous
    • 5 years ago
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    right

  15. anonymous
    • 5 years ago
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    the answer will be 8 = b

  16. anonymous
    • 5 years ago
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    just put it in words. b-4 = 4 means " the number BEE minus the number 4, gives me a number 4". so what is BEE?

  17. anonymous
    • 5 years ago
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    exactly. and you know b = 8 because 8 minus 4 is equal to 4.

  18. anonymous
    • 5 years ago
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    oh k thank you

  19. anonymous
    • 5 years ago
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    you are welcome

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