traveanb88p0laty
traveanb88p0laty traveanb88p0laty
  • 07-12-2017
  • Mathematics
contestada

How to solve in substitution
Y=2x-10
2y=x-8

Respuesta :

Аноним Аноним
  • 07-12-2017
2(2x-10)=x-8
4x-20=x-8
3x=12
x=4
Answer Link
dannielle
dannielle dannielle
  • 07-12-2017
2*y= x - 8, y= 2x - 10

2* (2x-10)= x - 8
2*2x - 2*10= x - 8
 4x - 20= x - 8     | +20
4x  =  x + 20 - 8 = x + 12     | - x
4x - x = 12
3x = 12
x= 12:3
x= 4

y= 2*4 - 10
y= 8 - 10
y= - 2


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