Х+2=-1
Х=-1-2
Х=-3
...................................................................................
4Х + 5 = 6 + 5 * ( X - 3 )
4X + 5 = 6 + 5X - 15
4X + 5 = 5X - 9
5X - 4X = 5 + 9
X = 14
0,8x*0,1-0,8x=180
0,08x-0,8x=180
-0,72x=180
x=180:(-0,72)
x=-250
А)A(-1;1) В(0,5;2) С(1.5;3) D(3;1.5) Е(2;1.5) К(2;0.5)
(4-3у)/(у+4)×[(у+4)(у-4)]/[-(у-4)(у-4)+у(у+4)]=
[(4-3у)×(у-4)]/[-4(4-3у)]=-(у-4)/4