1/, x+4 - 1/x-7 = 11/7 . / is sin of divide
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1/x+4 -1/x-7 =11/7
(x-7) - (x+4)/ (x+4)(x-7) =11/7
x-7-x-4/(x+4) (x-7)= 11/7
-11/(x+4)(x-7)=11/7
-1/(x+4)(x-7)=1/7
(x+4)(x-7)= -7
x^2-3x-28= -7
x^2-3x-21=0
x^2-7x+3x-21= 0
(x-7)(x+3)= 0
x-7 =0,x+3 =0
x= 7, x= -3
(x-7) - (x+4)/ (x+4)(x-7) =11/7
x-7-x-4/(x+4) (x-7)= 11/7
-11/(x+4)(x-7)=11/7
-1/(x+4)(x-7)=1/7
(x+4)(x-7)= -7
x^2-3x-28= -7
x^2-3x-21=0
x^2-7x+3x-21= 0
(x-7)(x+3)= 0
x-7 =0,x+3 =0
x= 7, x= -3
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