IM Grade 8 Unit 4 Lessons 1-6 Review

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x=4

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CCSS.7.EE.B.4A

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Identify the mistake in the following steps for solving an equation: Step 1: ... Step 2: ... Step 3: ...

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Mistake was made in Step 2.

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CCSS.HSA.REI.A.1

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r=20

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CCSS.7.EE.B.4A

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s=4

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CCSS.7.EE.B.4A

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c=2

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CCSS.8.EE.C.7B

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Subtract 5 from both sides.

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CCSS.6.EE.B.7

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What does it mean to isolate a variable in an equation?

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To manipulate the equation so that the variable is on one side and all other terms are on the other side.

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What is the distributive property?

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a(b + c) = ab + ac.

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CCSS.6.EE.A.3

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How do you check if your solution to an equation is correct?

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Substitute the solution back into the original equation.

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CCSS.6.EE.B.5

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x=4.

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CCSS.7.EE.B.4A