darkbmr97 darkbmr97
  • 11-09-2021
  • Mathematics
contestada

(3x-70)
(3y+40)
120
x

3x70 3y40 120 x class=

Respuesta :

Sadrra Sadrra
  • 11-09-2021
(3y+40)+(3x-70)=180

3y+3x-30=180
3y+3x=210
3(y+x)=210
y+x=70
x=70-y

meanwhile 180-120=x therefore x=60
therefore
60=70-y y=10
so x=60 y=10
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