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    -3z + 2.8 = 8.8

    0  Views: 359 Answers: 1 Posted: 14 years ago

    1 Answer

    I assume that you want to find the value of z in this equation. (Always write the question completely. That means "exactly what you want to do").


    - 3z + 2.8 = 8.8


    -3z = 8.8 - 2.8 = 6


    z = 6 divided by -3 = +6 divided by -3 = -2 


    If there is no sign before a number, we assume that it is plus.


    To divide in Algebra, divide the signs first and then divide the numbers.


    Use the following rules to divide the signs:


    + divided by + equals +


    - divided by - equals +


    + divided by - equals -


    - divided by + equals - 


    The same rules apply for multiplication:


    + multiplied by + equals +


    - multiplied by - equals +


    + multiplied by - equals -


    - multiplied by + equals -


    If you have any questions or doubts, please let me know.



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