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5x - 2x = 19 - 4
3x = 15
x = 15/3
x = 5
Respuesta :
x = 5
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b) 18x - 50 = 14x - 4x + 6
18x - 14x + 4x = 6 + 50
8x = 56
x = 56/8
x = 7
Respuesta :
x = 7
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c) 6x - 4 = 60 - 2x
6x + 2x = 60 + 4
8x = 64
x = 64/8
x = 8
Respuesta :
x = 8