а) 2,136:(1,9-х)=7,122,136 = 7,12 * (1,9 - x)2,136 = 13,448 - 7,12x7,12x = 13,448 - 2,1367,12x = 11,312x = 11,312 / 7,12x = 1,59
б) 4,2(0,8+у)=8,824,2 (0,8 + y) = 8,824,2 * 0,8 + 4,2y = 8,823,36 + 4,2y = 8,824,2y = 8,82 - 3,364,2y = 5,46y = 5,46 / 4,2y = 1,3
Ответ: а) x = 1,59 б) y = 1,3
а) 2,136:(1,9-х)=7,12
2,136 = 7,12 * (1,9 - x)
2,136 = 13,448 - 7,12x
7,12x = 13,448 - 2,136
7,12x = 11,312
x = 11,312 / 7,12
x = 1,59
б) 4,2(0,8+у)=8,82
4,2 (0,8 + y) = 8,82
4,2 * 0,8 + 4,2y = 8,82
3,36 + 4,2y = 8,82
4,2y = 8,82 - 3,36
4,2y = 5,46
y = 5,46 / 4,2
y = 1,3
Ответ: а) x = 1,59 б) y = 1,3