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0,2x = 1,5
x = 1,5/0,2
x = 7,5
1) Transformar a fracciones:
6x/10 - 4x/10 = 12/10 + 3/10
2x/10 = 15/10
2x = 15
x = 15/2
x=7.5
Con decimales:
0.6x - 0.4x = 1.2 + 0.3
0.2x = 1.5
x = 1.5/0.2
x= 7.5
O puedes multiplicar toda la ecuación x10
6x - 4x = 12 + 3
2x = 15
x= 15/2
x= 7.5