Frank has 5 times as many postcards as Tom. Together they have 60 postcards. Let x equal the number of postcards Tom has. Complete the equation that tells you exactly how many postcards Tom has.

12

Step-by-step explanation: 5x = 60

x = 12

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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