Boxque487id
Answered

Solve the following systems by elimination:
x + 2y = 1
3x - 5y = -8

Sagot :

Mlcparra16id
x + 2y = 1 ... [1]
3x - 5y = -8 ... [2]

3[1] - [2]
3x + 6y = 3
-3x + 5y = 8
      11y = 11
         y = 1

So:
x + 2y = 1 
x + 2(1) = 1
x + 2 = 1
x = -1