03.15.2024 Weekly Summative: Solving Equations

Take out scrap paper and solve: 4x + 6 = 18.

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Tags

CCSS.7.EE.B.4A

To undo an operation, you must do its opposite or inverse to both sides of the equation. Match each operation to its inverse.

• Multiplication

• Subtraction

• Subtraction

• Division

• Division

• Multiplication

• Addition

• Addition

4 = 4m - 2m

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• 0

• 2

• -6

• -16

1 = 6x + 2 - 7x

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• -12

• 1

• -11

• 10

-5(1 - 8n) - 4n = -221

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• 12

• -13

• 6

• -6

8(1 + 5n) + 8 = -144

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• 5

• 14

• -9

• -4

What is the final answer to

1 + 4n = 1 - 8n - 6n ?

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• 12

• 5

• 0

• -15

What is the final answer to

-4(b - 2) = -3 + 7b

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• 2

• -10

• 1

• -3

Describe the solution set:
2(x + 5) = 2x + 5

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• one solution
• no solution
• infinitely many solutions
• two solutions