5-1 Solving Inequalities By Addition And Subtraction Worksheet With Answers Page 3
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31The solution set is {n | n
3}.
5-1 Solving Inequalities by Addition and Subtraction
Define a variable, write an inequality, and solve each problem. Check your solution.
Twice a number increased by 4 is at least 10 more than the number.
Let n = the number.
The solution set is {n | n
}.
To check substitute three different values into the original inequality: 6, a number less than 6, and a number greater
than 6.
The inequality is true when n is greater than or equal to 6, so the solution checks.
Three more than a number is less than twice the number.
Let n = the number.
The solution set is {n | n > 3}.
To check substitute three different values into the original inequality: 3, a number less than 3, and a number greater
than 3.
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