Duhbuncup
Duhbuncup Duhbuncup
  • 18-10-2016
  • Mathematics
contestada

Simplify the expression: 2(3n+4)-2(2n+5)

Respuesta :

OMAX OMAX
  • 18-10-2016
=(6n+8)-(4n+10)
=6n-4n+8-10
=2n-2
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esteph
esteph esteph
  • 18-10-2016
you multiply 2 and 3n which gives you 6n
then 2 x4 is 8
you get 6n+8 for the first equation
you multiply -2 and 2n is -4
multiply -2 and 5 is -10 
you then have 6n+8-4n-10
combine like terms (6n and -4n)which is 2n
you end up with 2n+8-10
you subtract 8 on both sides of equation and get 2n-18
you divide 2 on both sides to end up with n-9 ←←←

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