dhana174
dhana174 dhana174
  • 25-09-2021
  • Mathematics
contestada

i need an answer to this big question

i need an answer to this big question class=

Respuesta :

moonlightpixie
moonlightpixie moonlightpixie
  • 25-09-2021

Answer:

RS + ST = RT

23 - 2x     +     9x - 5     =     39

18 + 7x = 39

7x = 39 - 18 = 21

x= 21/7

x = 3

RS = 23 - 2x (given)

RS = 23 - 2(3)

     = 23 - 6

RS = 17

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