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23 November, 08:43

1) Salma has a garden in trapezoid shape. She wants to build a fencing around the garden.

- The length of a fencing of a garden is 39a-7.

- Three sides have the following lengths: 9a, 5a+1, and 17a-6.

a) Write an equation that can be used to identify the length of the fourth side.

b) Solve your equation to find the length of the fourth sides of the garden.

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  1. 23 November, 12:21
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    a) 39a - 7 = 9a + 5a+1 + 17a-6 + X

    b) 8a - 2

    Step-by-step explanation:

    Let X be the length of the fourth side

    39a - 7 = 9a + 5a+1 + 17a-6 + X

    39a - 7 = 31a - 5 + X

    X = 39a - 7 - 31a + 5

    X = 8a - 2
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