Solve each problem. In the case, give the equation using x as the variable, and give the answer. See Example 1.
If 2 is added to five times a number, the result is equal to 5 more than four times the number. Find the number.
EXAMPLE 1 Finding the Value of an Unknown Number
The product of 4, and a number decreased by 7, is 100. What is the number?


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