5(3-3t)=30..........?

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I need to solve for t.
Update : How would I do the "check"
Best Answer
  • DLW answered 4 years ago
5(3-3t)=30
15 - 15t = 30 (distributive property)
-15t = 15 (subtract 15 from each side of equation)
t= -1 (divide each side of equation by -15)

To check substitute -1 for t in original equation.

5(3-3(-1)= 30
5(3 +3) = 30
30=30
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  • MICHAEL K answered 4 years ago
    5(3 - 3t) = 30
    15 - 15t = 30
    - 15t = 15
    t = - 1.
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  • allstargirl1108 answered 4 years ago
    first distribute the 5 and the 3 because the parenthesis mean to multiply
    5x3= 13
    Then u have to distribute the 5 and the -3t because u must multiply everything in the parenthisis
    5x-3t= -15t
    Now your equation is
    15-15t=30
    you have to get the t by itself so u can solve for t. In order to
    do that u have to subtract 15 from both sides.
    15-15=0 30-15=15
    now your equation is -15t=15
    After this you have to divde both sides by -15 because you want to isolate the value
    -15
    ------=1t also known as t and
    -15

    15
    ---------= -1
    -15
    There fore t=-1

    Source(s):

    To Check just plug the value back in for t.

    5(3-3t)=30
    15-15t=30
    15-15(-1)=30
    15+15=30
    30=30

    U just have to plug in -1 into t after u have distributed the properties
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  • Bailey answered 4 years ago
    you use distributive property to get rid of the five.

    5(3-3t)=30
    =15-15t=30

    you then subtract the 15 that is on its own to eliminate the monomial.

    =15-15t=30
    =-15t=15

    you then divide 15 by negative 15 to isolate t.

    =-15t=15
    =t=-1

    therefore t equals -1.
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  • xxforeverrxx answered 4 years ago
    t= -1
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  • ? answered 4 years ago
    Distribute on the let side.
    15-15t= 30
    -15t= 15
    t= -1.
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