1-4y = x , 1-4y = 2-2y, 1-2y = 2, -2y = 1 , y = -0.5
2-y = x+y, 2= x+2y, x = 2-2y , 2+0.5 = x -0.5, 2.5 = x -0.5, x=3
y=-0.5
x = 3
Проверка. 1-4(-0.5) = 3, 1+2 = 3, 2+0.5 = 3-0.5, 2.5 = 2.5
12/11>11/12--1
3/7<7/3
<span>99/100<3/2</span>
100%*0,2=20%
100%-20%=80%
80%*0.2=16%
80%-16%=64%
100%-64%=36%
На 36%
Обратим все в кг.
1 т=1000 кг. Так будет легче.
35074 кг- 19186 кг= 15888 кг = 15т888кг