Номер 217,218.
Под буквами а),б)
Фото прилагается.
Помогите срочно.

217)1/2x - 7/16x = -5/8 - 3/48/16x - 7/16x = -5/8 - 6/81/16x = -11/8x= - 11/8 * 16x= -22-----------------------7/12x + 1/6x =  2/3 -5/97/12x + 2/12x = 6/9 - 5/99/12x = 1/9x = 1/9 * 12/9x= 4/27==========================218)3/7x + 11/14x = 5/12 - 3/4 6/14x + 11/14x = 5/12 - 9/1217/14x = -4/12x = -1/3 * 14/17x = -14/51-----------------------------1/5x - 19/50x = 9/10 - 7/25-10/50x - 19/50x = 45/50 - 14/50-29/50x = 31/50x = -31/50 * 50/29x = -31/29x = -1 2/29========================