cayyeb29 cayyeb29
  • 03-03-2021
  • Mathematics
contestada

Solve the system of equations using the substitution method. 2x+y=8
y=x-1

Respuesta :

varukattygafoorsohil varukattygafoorsohil
  • 03-03-2021

Answer:

x=3

Step-by-step explanation:

If we know that y=x-1, we can just substitute it and replace y with (x-1)

so 2x+y=8 becomes:

2x+(x-1)=8 and we simplify that into:

3x-1=8, add 1 on both sides to make it:

3x=9, divide 3 on both sides

x=3

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