Equacions de 1-er grau

(1) 1/2 ( x - 2/3 ) + 5 x = - 2 x + 44/3 (2) 3 - ( 5 - x ) = 8 x (3) 5 ( x + 2 ) / 3 + 3 ( 2x - 7 ) / 4 = 3x - 5/4 (4) 3x - 6 [ 4x + 2 - 2 ( x + 1 ) ] = 0 (5) 5 ( x - 2 ) / 3 - 7 ( x - 3 ) / 2 = 5 + ( x - 1 ) / 2 - ( x + 4 ) (6) 4/7 ( ( 3x / 4) - 3/2 ) = 5/2 ( ( 4x / 5) + 2/7 ) (7) 9 [ ( x + 3 ) + 2 ( x - 1 )] - 18 [ -2 ( x + 2 )+ x + 3] = 27 ( 4x + 3 ) (8) 7x / 5 = 5 ( x - 8 ) / 3 (9) ( ( 2x + 1 ) / 3 ) - ( ( x - 1 ) / 5 ) = 7x - 2 / 15 (10) ( ( 3x + 4 ) / 3 ) - ( ( 2x + 1 ) / 4 ) = ( x / 2 ) + 13/12 (11) ( x + 3 ) ² = ( x + 2 ) * ( x - 2 ) cero (mínimo) en x = -3 / ceros en +-2 y minimo en -4