Question

Помогите плиз срочно! 2 уравнения

Answer 1

2). у -7/12 = 7/2*(-4/7) = -28/14 = -2;
у = -2-7/12 = - 2 7/12 = -31/12.

3). -105/350 -у = 15/4;
-21/70 -у = 15/4;
у = -21/70-15/4 = -3/10-15/4 = (-3*4)-(15*10)/40 = -12-150/40 = -162/40 = -81/20.

Answer 2

Спасибо!