grant13 grant13
  • 22-05-2017
  • Mathematics
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I need to know how to do this

I need to know how to do this class=

Respuesta :

Devn
Devn Devn
  • 22-05-2017
Hello, 

just add the two equations and make it equal to 180 and solve.. 

here, 15x + 4 + 10x + 1 = 180
now combine 15x and 10x to get 25x and 4and 1 to get 5

now we have 25x + 5 = 180 
subtract 5 from 180 to get 175
then divide by 25 to get 7

X = 7
hope it helped.

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