Explicación paso a paso:
x=2y+2
3x+2y=14
3(2y+2)+2y=14
6y+6+2y=14
8y+6=14
8y=8
y=1
x=2(1)+2
x=2+2
x=4
marca la que dice 4,1
x=7-4y
2(7-4y)-y=5
14-8y-y=5
14-9y=5
14-5=9y
9=9y
1=y
x=7-4(1)
x=7-4
x=3
Marca el que dice 3,1
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Explicación paso a paso:
x=2y+2
3x+2y=14
3(2y+2)+2y=14
6y+6+2y=14
8y+6=14
8y=8
y=1
x=2(1)+2
x=2+2
x=4
marca la que dice 4,1
x=7-4y
2(7-4y)-y=5
14-8y-y=5
14-9y=5
14-5=9y
9=9y
1=y
x=7-4(1)
x=7-4
x=3
Marca el que dice 3,1