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20 April, 02:26

Using = 2L+2W, Find L when P is 50 and W is 10

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  1. 20 April, 02:48
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    L = 15

    Step-by-step explanation:

    P = 2L + 2W

    you know that P = 50, W=10

    So you have to replace those values on the equation

    50 = 2L + 2 * (10) - -> Replace P and W

    50 = 2L + 20 - -> Multiply and now you are going to separate the unknown and the constants.

    Remember that if you send a constant to the other side of the equal the sign will change to its opposite

    50 - 20 = 2L - -> Solve the constants

    30 = 2L - -> Now for the L, you have to leave it alone, so the 2 that is multiplying you have to send it to the other side of the equal but with the opposite operation, the opposite operation of multiplying is dividing, so you have:

    30/2 = L

    L = 15
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