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  • 20-10-2015
  • Mathematics
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7. What is the value of x? −4x − 6 = −34
A. −10
B. −7
C. 7
D. 10

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  • 20-10-2015
-4x - 6 = -34

First, add '6' to both sides.
[tex]-4x = -34 + 6[/tex]
Second, subtract '-34 + 6' to get '-28'.
[tex]-4x = -28[/tex]
Third, divide both sides by '-4', leaving the 'x' by itself.
[tex]x = \frac{-28}{-4} [/tex]
Fourth, simplify the fraction into a negative.
[tex]x = \frac{28}{4} [/tex]
Fifth, how many times can 4 go into 28? Divide. 28 ÷ 4 = 7.
[tex]x = 7[/tex]

Answer: C) x = 7

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