Find the Value of `-(2)/(13)-:(1)/(7)`

Find the value of x (-6)/(13) - (-7)/(15) = x

Find the value of (1)/(1+(1)/(3-(1)/(2+(4)/(2+(1)/(2+(1)/(2-(1)/(7)))))))+(3)/(3-(4)/(3+(1)/(2-(1)/(2))))*(13)/(7) (b) (15)/(7) (c) (11)/(21) (d) (1)/(28)

Find the value of (1)/(sqrt(7)-2)

Find the value of : (-13)+32-8-1

Find the value of (-2)^6, (-1)^7

Find the value of 7 1/2=4/x

If a^(2)+1/(a^(2))=7 , find the value of (a-1/(a))

If a=(3+sqrt(7))/(2), then find the value of a^(2)+(1)/(a^(2))

If a^(2)+1/(a^(2))=7 , find the value of (a^(2)-1/(a^(2)))