TEKS.MATH.8.8C

Find the Error
What error did the student make when solving the equation:
1/5x + 6 = 3/5x + 5
1x + 6 = 3x + 5
-2x + 6 = 5
-2x = -1
x = 1/2

• The student found an incorrect common denominator
• The student did not multiply all terms by the common denominator
• The student did not use opposite operations appropriately
• The student did not correctly eliminate the variable from one side of the equation

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TEKS.MATH.8.8C

Solve
a² + 2a - 24 = 0

• a = -6, 4
• a = 6, -4
• a = 12, -2
• a = 8, -3

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TEKS.MATH.8.8C

Solve.
3x - 12 = -3

• x = 3
• x = -3
• x = 5
• x = -5

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TEKS.MATH.8.8C

-8(0)=

• -8
• 8
• 0
• -0

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TEKS.MATH.8.8C

Solve the equation below:

• k = 152
• k = 176
• k = 5
• k = 27

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TEKS.MATH.8.8C

6(x + 1) - 5(x + 2)

• 2x + 8
• x - 4

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TEKS.MATH.8.8C

Solve the equation. 

• 24
• ¹⁴⁷/₈ or 18 ³/₈
• 168
• -24

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TEKS.MATH.8.8C

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Tags

TEKS.MATH.8.8C

|v + 8| − 5 = 2 

• {-1,-15}
• {-1,-5}
• {-15,15}
• No Solution

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TEKS.MATH.8.8C

Simplify

(8x + 32)/( x+4)

• 8/(x - 4)

• -x/(x - 4)

• -8

• 8

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TEKS.MATH.8.8C