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Resolvemos:
5x - 11 + 2 (2x + 3) = 2x + 9
5x - 11 + 4x + 6 = 2x + 9
5x + 4x - 11 + 6 = 2x + 9
9x - 5 = 2x + 9
9x - 2x = 9 + 5
7x = 14
x = 14/7
x = 2
Respuesta.
x = 2
VERIFICAMOS LA SOLUCIÓN
5x - 11 + 2 (2x + 3) = 2x + 9
5 (2) - 11 + 2 (2 * 2 + 3) = 2 (2) + 9
10 - 11 + 2 (4 + 3) = 4 + 9
- 1 + 2 (7) = 13
- 1 + 14 = 13
13 = 13
La solución es correcta!!!
9x-5=2x+9
9x-2x=9+5
7x=14
x=14/7
x=2
Comprobacion
5x-11+2.(2x+3)=2x+9
5(2)-11+2(2(2)+3)=2(2)+9
10-11+2(7)=4+9
-1+14=13
13=13