Respuesta:
1: 2x +3x +5 =65
X=12
2:15-a+4a=-6
a= -7
3
4x + 6 = -x -14
x= -4
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Respuesta:
1: 2x +3x +5 =65
X=12
2:15-a+4a=-6
a= -7
3
4x + 6 = -x -14
x= -4