Respuesta:
5x+4y=32 (-3)
3x+4y=24 (5)
-15x-12y=-96
15x+20y=120
/ 8y=24
y=24/8
y=3
3x+4(3)=24
3x+12=24
3x=24-12
3x=12
x=12/3
x=4
4x+9y=29 (-2)
2x+9y=19 (4)
-8x-18y=-58
8x+36y=76
/ 18y=18
y=18/18
y=1
2x+9(1)=19
2x+9=19
2x=19-9
2x=10
x=10/2
x=5
Explicación:
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Respuesta:
5x+4y=32 (-3)
3x+4y=24 (5)
-15x-12y=-96
15x+20y=120
/ 8y=24
y=24/8
y=3
3x+4(3)=24
3x+12=24
3x=24-12
3x=12
x=12/3
x=4
4x+9y=29 (-2)
2x+9y=19 (4)
-8x-18y=-58
8x+36y=76
/ 18y=18
y=18/18
y=1
2x+9(1)=19
2x+9=19
2x=19-9
2x=10
x=10/2
x=5
Explicación: