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0,6x - 0,3 = 1,2 + 0,4x
0,6x - 0,4x = 1,2 + 0,3
0,2x = 1,5
x = 1,5/0,2
x = 7,5
Respuesta.
x = 7,5
6x /10 - 3/10 = 12/10 + 4x /10
6x /10 - 4x/10 = 12/10 + 3/10
2x/10 = 15/10
2x = 15
x= 15/2
x = 7.5