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  • 16-10-2017
  • Mathematics
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what’s three times the difference of a number and four is -9

whats three times the difference of a number and four is 9 class=

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BenjaminG123
BenjaminG123 BenjaminG123
  • 16-10-2017
Greetings!

We can translate this into an equation:
[tex]3(x-4)=-9[/tex]

Solve for x:
Distribute the Parenthesis.
[tex]3x-12=-9[/tex]
Add 12 to both sides.
[tex](3x-12)+12=(-9)+12[/tex]
[tex]3x=3[/tex]
Divide both sides by 3.
[tex](3x)/3=(3)/3[/tex]
The Answer Is:
[tex]x=1[/tex]

Hope this helps.
-Benjamin
Answer Link

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