Solving Two-Step Equations 7th

What is the first step to solve this equation:
11 - 3x = 44

• Add 3 to both sides
• Subtract 11 from both sides
• Add 11 to both sides
• Divide 3 on both sides.

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7.11.A

What was done to solve the equation?

(Line 1) 5x - 8 = 32

(Line 2) 5x = 40

(Line 3) x = 8

• add 8 to both sides, then divide both sides by 5

• add 8 to both sides, then divide both sides by 40

• subtract 8 from both sides, then divide both sides by 5

• subtract 8 from both sides, then multiply both sides by 5

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7.11.A

The steps in solving 5b - 6 = 24 are: 

• Add 6 to both sides and divide both sides by 5
• Add 6 to both sides and multiply both sides by 5
• Subtract 6 from both sides then multiply both sides by 5
• Subtract 6 from both sides then divide both sides by 5

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7.11.A

• Subtract 9 from both sides of the equation.

• Add 9 to both sides of the equation.  

• Subtract 3 from both sides of the equation.

• Add 10 to both sides of the equation.  

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7.11.A

Mathematical Equivalence

ON

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7.11.A

Mathematical Equivalence

ON

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7.11.A

Reorder the following: What are the steps for solving a two-step inequality?

• Multiply or Divide to get the x by itself

• Add or Subtract to get the x's by themselves

• If you multiply or divide by a negative number, flip the inequality sign

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7.11.A

• 3

• 5

• 7

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7.11.A

How is an inequality effected if both sides are multiplied or divided by a negative?

• Change the variable to a positive

• Flip the Inequality Sign

• Flip the Equal Sign

• Change the variable to a negative

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7.11.A