Rayblue133viz
Answered

Solve the following systems by elimination: 2x – y = 4
x + y = 5

Sagot :

Mlcparra16viz
We add the two equations,
2x - y = 4
x + y = 5
 3x  =  9
  x =3

So :
x + y = 5
3 + y = 5
y = 2