anonymous
  • anonymous
1x+7=18-2x
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
2+y=-7+2y Subtract y from each side 2=-7+y Add 7 to each side 9=y
anonymous
  • anonymous
dont you have to divide
anonymous
  • anonymous
You only have to divide if the y has a value. For example: 2y=10 Divide each side by 2 y=5 But in your case, the y had no value so there was no need to divide.

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anonymous
  • anonymous
ohhhhhhhhh
anonymous
  • anonymous
thank u very much
anonymous
  • anonymous
No problem. :)

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