bell work9/16/14 solve the equation. yesterday’s homework 1.any questions? 2.please pass your...
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Bell Work 9/16/14Solve the equation.
1. 3 7 5x 2. 6 4 8x
5. 2 7 9x 6. 11 13 3x
3. 3 125
x
14. 7 9
2x
Yesterday’s Homework
1. Any questions?2. Please pass your homework to the front.
• Make sure the correct heading is on your paper.• Is your NAME on your paper?
• Make sure the homework is 100% complete.• Incomplete work will NOT be accepted.
Solving Multi-Step Equations (3-Step)
04/20/23
Heading
TSWBAT: solve 3-step equations.
Students solve multi-step problems, including word problems, involving linear equations and linear inequalities in one variable and provide justification for each step.
2.3A
Notes
What you do to one side, you must do to the other.
• The Golden Rule (of Mathematics)
1. Simplify both sides of the equation.
2. Collect the variables to one side of the equation.
• Steps for Solving Linear Equations
3. Use inverse operations to isolate the variable.
• Distribute and/or combine like terms.
• Collect to the side with the greater variable.
• PEMDAS backwards.
Notes
Ex.
2 3 24x
2 22 18x 6 6
9x
2x 6 24
Solve the equation. Now you try.
Ex.
4 5 8x
4 44 28x 20 20
7x
4x 20 8Distribute first.
What operation do I do next?
What operation do I do next?
Notes
Ex.
3 4 27x
3 3 3 15x
12 12
5x
3x 12 27
Solve the equation.Ex.
2 6 18x
2 2 2 30x
12 12
15x
2x 12 18
Now you try.
Distribute first.
What operation do I do next?
What operation do I do next?
Notes
Ex.
7 7
Combine like terms first.
5x
What operation do I do next?
3 4 35x x 7 35x
Ex.
4 4 7x
2 6 28x x 4 28x
Now you try.
Solve the equation.Ex.
5 5 4 x
20 4 9x x 20 5x
Ex.
4 4 8 x
32 2 2x x 32 4x
Notes
Ex.
7 73x
Combine like terms first.2 3 5 9 27x x 7x 6 27
6 6 7 21x
What operation do you do next?
What operation do you do next?
Solve the equation. Now you try.
Ex.
3 3 2 x
14 4 6 7 2x x
14 3x 88 8 6 3x
Summary
To solve a 3-step equation you first have to distribute and/or ________ like terms. After that isolate the variable term by _______ or subtracting. Finally isolate the variable completely by multiplying or ________.
combineadding
dividing
#1-13 on next slide
& Worksheet 2.3A
Today’s Homework
1. Pencil ONLY.2. Must show all of your work.• NO WORK = NO CREDIT
3. Must attempt EVERY problem.4. Always check your answers.
Rules for Homework
Homework 2.3ASolve the equation.
1. 2 5 16x 2. 3 2 12x 3. 4 3 32x
7. 7 2 25x x
10. 3 5 4 20x x 11. 3 2 5 10x x
4. 14 2 5x 5. 30 6 2x 6. 24 6 3x
8. 27 4 7x x 9. 3 5 40x x
12. 12 5 6x x 13. 20 3 8 7x x
Complete the Ticket Out the Door without talking!!!!!
Talking = time after the bell!
Ticket Out the Door
Put your NAME on the paper.
When finished, turn your paper face DOWN.
Solve the equation.
5 2 20x
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