Question

Resposta da equaçao 3x+2y=10 2x+y=8

Answer 1

2x+y = 8
y = 8-2x

3x+2y = 10
3x + 2(8-2x) = 10
3x + 16 - 4x = 10
16 - x = 10
-x = 10 - 16
-x = -6
x = 6

y = 8-2x
y= 8-2(6)
y = 8 - 12
y= -4

Answer 2

{3x+2y=10
{2x+y=8

3x+2y=10
3x+2 (8-2x)=10
3x+16-4x=10
16 - x=10
-x=10-16
-x= -6
x=6

y= 8 - 2x
y= 8 -2 (6)
y= 8 -12
y= - 4

s ( 6. -4 )