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1. 6x - x =5
5x = 5
2. 4x + 6x = 40
10x = 40
3. 2x , 2x + 1
Un número ==>> x
a) 3x - x/2 = 5
b) 2x + 3x =40
c) x ; x+1
Espero haberte ayudado.
Suerte!!!