Решите уравнение: 3 1/2 * (2/3х + 4/7) = 2 1/3 Заранее спасибо
3 1/2 * ( 2/3x + 4/7 ) = 2 1/3 2/3x + 4/7 = ( 2 1/3 ) : ( 3 1/2 ) 2 1/3 : 3 1/2 = 7/3 : 7/2 = 2/3 2/3x + 4/7 = 2/3 2/3x = 2/3 - 4/7 2/3 - 4/7 = 14/21 - 12/21 = 2/21 2/3x = 2/21 x = 2/21 : 2/3 x = 3/21 х = 1/7
7/2 × (2/3х + 4/7) = 2 1/3 2 1/3х + 2 = 2 1/3 2 1/3х = 2 1/3 - 2 2 1/3х = 1/3 х = 1/3 : 7/3 х = 1/7