jackelinev2745 jackelinev2745
  • 30-11-2017
  • Spanish
contestada

The sum of -7 Times a number and 8 Times the sum of the number and 1 is the same as the number minus 7

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Sharlet999
Sharlet999 Sharlet999
  • 30-11-2017
(-7 • z) + 8 • (z + 1) = z - 7
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