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5x -3x -3 = 7
2x -3 = 7
2x = 7+3
x= 10/2
x = 5
El numero es 5
x+1=número consecutivo
5x-2(x+1)=7²
5x-2x-2=49
3x-2=49
3x=49+2
3x=51
x=51/3
x=27
el número es el 27