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Common Core Standard HSA-REI.A.1 Questions

Explain each step in solving a simple equation as following from the equality of numbers asserted at the previous step, starting from the assumption that the original equation has a solution. Construct a viable argument to justify a solution method.

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Grade 9 Linear Equations CCSS: HSA-REI.A.1
The first step of solving an equation is given. Choose the correct justification for this first step.

[math] 3x+2 [/math][math]= \ \ 10[/math]
[math]3x+2-2[/math][math]= \ \ 10-2 [/math]
  1. Addition Property of Equality
  2. Subtraction Property of Equality
  3. Multiplication Property of Equality
  4. Division Property of Equality
Grade 9 Linear Equations CCSS: HSA-REI.A.1
The first step of solving an equation is given. Choose the correct justification for this first step.

[math] 3(x-9) [/math][math]= \ \ 16[/math]
[math](3(x-9))/3[/math][math]= \ \ 16/3 [/math]
  1. Addition Property of Equality
  2. Subtraction Property of Equality
  3. Multiplication Property of Equality
  4. Division Property of Equality
Grade 9 Linear Equations CCSS: HSA-REI.A.1
Grade 9 Linear Equations CCSS: HSA-REI.A.1
The first step of solving an equation is given. Choose the correct justification for this first step.

[math] 4x-5 [/math][math]= \ \ -3[/math]
[math]4x-5+5[/math][math]= \ \ -3+5 [/math]
  1. Addition Property of Equality
  2. Subtraction Property of Equality
  3. Multiplication Property of Equality
  4. Division Property of Equality
Grade 9 Polynomials and Rational Expressions CCSS: HSA-REI.A.1

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