anessaashlee
anessaashlee anessaashlee
  • 18-09-2018
  • Mathematics
contestada

4(-2d-3)=12, someone please solve this for me asap

Respuesta :

cali1024bella
cali1024bella cali1024bella
  • 18-09-2018

4(-3 + -2d) = 12

(-3 * 4 + -2d * 4) = 12

(-12 + -8d) = 12

-12 + -8d = 12

-12 + 12 + -8d = 12 + 12

-12 + 12 = 0

0 + -8d = 12 + 12

-8d = 12 + 12

12 + 12 = 24

-8d = 24

d = -3

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