Subtracting Expressions in Solving Equations

Solve the equation

-8x - 8 +3(x - 2) = -3x + 2

• x = -8

• x = 8

• x = 2

• x = -2

Find the error in the problem below
19 - 2k = 3k - 1
     +3k   +3k
19 + 1k = -1
-19           -19
k = -20

• They should have divided by 1 for the last step

• They should add 19 instead of subtracting 19

• I can not find an error

• Instead of adding 3k they should subtract 3k

Tags

CCSS.HSA.REI.A.1

Simplify each expression.
(4n⁴ - 8n + 4) - (8n² + 4n⁴ + 1)

• -8n² - 8n + 3 

• -7n² - 8n + 3 

• -6n² - 8n + 3

• -7n² - 4n + 3

Tags

CCSS.HSA.APR.A.1

Solve: -14 = -(x + 5)

Mathematical Equivalence

OFF

Tags

CCSS.7.EE.B.4A

Hint: Factor first

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Tags

CCSS.HSA.APR.D.7

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Tags

CCSS.HSA.APR.D.7

Subtract:  -6x²y from -10x²y

• 4x²y

• -4x²y

• 16x²y

• -16x²y

Tags

CCSS.HSA.APR.A.1

• A

• B

• C

• D

Tags

CCSS.HSA.APR.D.7

Perform the operation

• A

• B

• C

• D

Tags

CCSS.HSA.APR.D.7

• A

• B

• C

• D

Tags

CCSS.HSA.APR.D.7