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What is the first step that you have to do in order to solve the proportion: 1 inch/10 miles = 7 inches/z miles

10 * z = 1 * 7

1 * z = 10 * 7

7 * z = 10 * 1

1 * 7

1 Answer

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If your proportion is
(1)/(10)=(7)/(z), you cross multiply to solve for z: 1 * z = 10 * 7, second choice above

User Jinjinov
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