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Use a proportion to find the missing side length, xx .

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Two rectangles. Larger rectangle is located on the left with a top side length of 10 and a right side length of 6. Smaller rectangle is located on the right with a top side length of 5 and a right side length of x.

User Kaalus
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1 Answer

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6/10 = x / 5
cross multiply
(10)(x) = (6)(5)
10x = 30
x = 30/10
x = 3 <=====right side length