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3-4A Solving Multi-Step Inequalities

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Presentation on theme: "3-4A Solving Multi-Step Inequalities"— Presentation transcript:

1 3-4A Solving Multi-Step Inequalities
Algebra 1

2 Steps for Solving Multi-Step Inequalities
1.) Simplify (use distributive prop., add like terms, or multiply by the denominator) 2.)When the variable is on both sides of the Inequality, then add the opposite of either one to both sides. 3.) Add the opposite of the number on the same side of the variable to both sides.

3 Steps (continued) 3.) Divide by the coefficient OR multiply by the reciprocal of the coefficient to both sides. **Remember that when you divide or multiply by a negative number that the inequality symbol changes. 4.)Solve for the variable.

4 Example 1 20 - 6c < 44

5 Example 2 5m – 4 < 2m + 11

6 Example 3 -3(j + 3) + 9j < -15

7 Assignment

8 Example 1(Continued) 20 - 6c < 44 Add the opposite

9 Example 1 (continued) 20 - 6c < 44 -20 -20 Add the opposite

10 Example1 (Continued) 20 - 6c < 44 -20 -20 Add the opposite
-6c < Divide by the coefficient

11 Example 1 (Continued 20 - 6c < 44 -20 -20 Add the opposite
-6c < Divide by the coefficient Switch symbol(divided by neg. #) c > Solution

12 Example 2 (Continued) 5m – 4 < 2m + 11 -2m m Add the opp.

13 Example 2 (Continued) 5m – 4 < 2m + 11 -2m -2m Add the opp

14 Example 2 (Continued) 5m – 4 < 2m + 11 -2m -2m Add the opp

15 Example 2 ( Continued) 5m – 4 < 2m + 11 -2m -2m Add the opp
3m < 15 Divide by 3

16 Example 2 ( continued) 5m – 4 < 2m + 11 -2m -2m Add the opp
3m < 15 Divide by 3 m < Solution


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