Question

slove by elimination method x+2y=5 2x+y=4​

Answer 1

Answer:

x= 1 and y=2

Step-by-step explanation:

By elimination method,

x+2y=5.......eq.(1)

2x+y=4.......eq.(2)

Multiplying eq.(1) with 2

=>2(x+2y)=2(5)

=>2x+4y=10.......eq.(3)

Subtracting eq.(2) from eq.(3)

=>2x+4y-(2x+y)=10-4

=>2x+4y-2x-y=6

=>3y=6

=>y=2

x=1

Answer 2

X+2y=5 2X+y=4
X=5-2y 2X+y=4
to find value of y
2x5-2y+y=4
10-3y=4
10-4=3y
6=3y
y=6/3
y=3
now
X=5-2x2
X=5-4
X=1
1+2x2=5
2x1+2=4