11*(x-11)=5*(x-5)
11x-121=5x-25
11x-5x=-25+121
6x=96
x=96:6
x=16
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10(x-10)+4(x-4)=2*(x^2-14x+40)
10x-100+4x-16=2x^2-28x+80
14x-116=2x^2-28x+80
2x^2-42x+196=0
x^2-21x+98=0
D=21^2-4*98=441-392=√49=7
X1=(21+7)/2=28/2=14
X2=(21-7)/2=14/2=7
ответ (7;14)
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2)
1/(x+6)=-1/(x-1)
1(x-1)=-1(x+6)
x-1=-x-6
x+x=-6+1
2x=-5
x=-5:2
x=-2,5