Ramientospizza496id
Answered

Solve the following systems by substitution method:
2x – 5y = -1
2x – y = 1

Sagot :

Mlcparra16id
In the second equation: 
2x - y =1
2x - 1 = y

So in the first equation:
2x - 5(2x - 1) = -1
2x - 10x + 5 = -1
-8x = -6
x = 3/4

2(3/4) -1 = y
3/2 -1 = y
1/2 = y