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x - 5 (8) = 3x - (2 * 11)/3
(x - 40)/5 = 3 (3x) + (- 2 * 11)/3
(x - 40)/5 = 9x + (- 22)/3
(x - 40)/5 = (9x - 22)/3
3x - 3 * 40 = 5 * 9x - 5 * 22
3x - 120 = 45x - 110
3x - 45x = - 110 + 120
- 42x = 10
x = 10/-42---simplificamos
x = 5/-21
Solución :
x = -5/21