Помогите с 4 и 5 очень надо
X/7+x/8+x=-48/7 8x/56+7x/56+56x/56=-48/7 71x/56=-48/7 71x=-48/7*56/1 71x=-2688/7 x=-2688/7*1/71 x=-2688/497 x=-384/71=-5 29/71 y/4+y/5+y=-26/5 5y/20+4y/20+20y/20=-104/20 29y/20=-104/20 29y=-104 y=-104/29 y=-3 17/29