Помогите решить уравнения . 1)3/4х+5/8=1/2х-9/16 2)2/3х-5/9=1/3+2х 3)-0.83+0.7у=0.24у+0.412

1) 3/4х + 5/8 = 1/2х - 9/16; 5/8 + 9/16 = 1/2х - 3/4х; 10/16 + 9/16 = 2/4х - 3/4 х; 19/16 = - 1/4х; х = 19/16 : (-1/4); х = 19/16 * (4/1); х = - (19 * 4)/(16 * 1); х = - (19 * 1)/(4 * 1); х = -19/4; х = - 4 3/4. Ответ: - 4 3/4; 2) 2/3х - 5/9 = 1/3 + 2х; 2/3х - 2х = 1/3 + 5/9; 2/3х - 1 3/3х = 2/9 + 5/9; - 1 1/3х = 7/9; х = 7/9 : (-1 1/3); х = 7/9 : (-4/3); х = 7/9 * (-3/4); х = -(7 * 3)/(9 * 4); х = -(7 * 1)/(3 * 4); х = -7/12. Ответ: -7/12;3) -0.83 + 0.7у = 0.24у + 0.412; 0.7у - 0.24у = 0.412 + 0.83; 0.46у = 1,242; у = 2.7.Ответ: 2.7.