Respuesta:
c) 3;5
Explicación paso a paso:
2m + 3p = 21... (1)
3m + 2p = 19... (2)
2m= 21 -3p => 21-3p /2
3m= 19 -2p => 19-2p /3
21-3p /2 = 19-2p /3
3(21-3p) = 2(19-2p)
63 -9p = 38 -4p
-9p +4p = 38 -63
-5p = -25
p= -25/-5
[p= 5] precio por kg de pera.
Reemplazamos "p" en la ecuación (2)
3m + 2p = 19
3m +2(5)= 19
3m + 10 = 19
3m = 19 -10
3m = 9
m= 9/3
[m= 3] precio por kg de manzana.
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Verified answer
Respuesta:
c) 3;5
Explicación paso a paso:
2m + 3p = 21... (1)
3m + 2p = 19... (2)
2m= 21 -3p => 21-3p /2
3m= 19 -2p => 19-2p /3
21-3p /2 = 19-2p /3
3(21-3p) = 2(19-2p)
63 -9p = 38 -4p
-9p +4p = 38 -63
-5p = -25
p= -25/-5
[p= 5] precio por kg de pera.
Reemplazamos "p" en la ecuación (2)
3m + 2p = 19
3m +2(5)= 19
3m + 10 = 19
3m = 19 -10
3m = 9
m= 9/3
[m= 3] precio por kg de manzana.