Question

1)x+2y=3
2x+4y=8

2)2x+y=5
4x+2y=10
Poderiam me ajudar nessas contas pfv

Answer 1

1) 2x+4y= 8
2x= 8-4y
x= 8-4y/2
x= 4y/2
x= 2y

x+2y= 3
2y+2y= 3
4y= 3
y= 3/4

x= 2y
x= 2×3/4
x= 6/8

2) 4x+2y= 10
4x= 10-2y
x= 8y/4
x= 2y

2x+y= 5
2×(2y)+y= 5
4y+y= 5
5y= 5
y= 5/5
y= 1

x= 2y
x= 2×1
x= 2