[tex]7.(x - 3) - 2(x - 1) - 3 = 13[/tex]
[tex]7x - 21 - 2x + 2 - 3 = 13[/tex]
[tex]5x - 22 = 13[/tex]
[tex]5x = 13 + 22[/tex]
[tex]5x = 35[/tex]
[tex]x = 7[/tex]
Hay esta me pones coronita y corazoncito :)
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[tex]7.(x - 3) - 2(x - 1) - 3 = 13[/tex]
[tex]7x - 21 - 2x + 2 - 3 = 13[/tex]
[tex]5x - 22 = 13[/tex]
[tex]5x = 13 + 22[/tex]
[tex]5x = 35[/tex]
[tex]x = 7[/tex]
Hay esta me pones coronita y corazoncito :)