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Resolvemos:
3x-2+6x=15+2x+11
3x + 6x - 2 = 2x + 15 + 11
9x - 2 = 2x + 26
9x - 2x = 26 + 2
7x = 28
x = 28/7
x = 4
Respuesta.
x = 4
COMPROBAMOS LA SOLUCIÓN
3x-2+6x=15+2x+11
3 (4) - 2 + 6 (4) = 15 + 2 (4) + 11
12 - 2 + 24 = 15 + 8 + 11
36 - 2 = 34
34 = 34
La solución es correcta!!!
9x - 2 = 26 + 2x
9x - 2x = 26 + 2
7x = 28
7x/7 = 28/7
x= 4
3(4) - 2 + 6(4) = 15 + 2(4) + 11
12 - 2 + 24 = 15 + 8 +11
34 = 34