Explicación paso a paso:
1)
x+5y=5
3x-5y=3
5y=5-x
3x-(5-x)=3
4x=8
x=2
2+5y=5
5y=3
y=3/5
x=2 y=3/5
2)
2x-3y=1
-4y+6x=-2
2x=1+3y
-4y+3(1+3y)=-2
-4y+3+9y=-2
5y=-2-2
5y=-5
y=-1
2x-(-3)=1
2x+3=1
2x=-2
x=-1
3)
y=-2x+1
4x+2y=3
4x+2(-2x+1)=3
4x-4x+2=3
xEø
4)
6x-5y=-3
3x+2y=12
3x=12-2y
2(12-2y)-5y=-3
24-4y-5y=-3
24-9y=-3
-9y=-3-24
-9y=-27
y=3
3x+6=12
3x=6
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Explicación paso a paso:
1)
x+5y=5
3x-5y=3
5y=5-x
3x-(5-x)=3
4x=8
x=2
2+5y=5
5y=3
y=3/5
x=2 y=3/5
2)
2x-3y=1
-4y+6x=-2
2x=1+3y
-4y+3(1+3y)=-2
-4y+3+9y=-2
5y=-2-2
5y=-5
y=-1
2x-(-3)=1
2x+3=1
2x=-2
x=-1
3)
y=-2x+1
4x+2y=3
4x+2(-2x+1)=3
4x-4x+2=3
xEø
4)
6x-5y=-3
3x+2y=12
3x=12-2y
2(12-2y)-5y=-3
24-4y-5y=-3
24-9y=-3
-9y=-3-24
-9y=-27
y=3
3x+6=12
3x=6
x=2