Question 1142311
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Let Scott's age be x.<br>
Then his mother's age is 45-x.  (The sum of their ages is 45.)<br>
Use the expressions for their current ages to determine expressions for their ages 5 years from now.<br>
Use the expressions for their ages 5 years from now to write and solve the equation that says that 5 years from now his mother's age will be 9 less than 3 times Scott's age.