" (ii) "(-12)/(7)+(3)/(7)+(-2)/(7)

Verify the following: (i) (-12)/(5)+(2)/(7)=(2)/(7)+(-12)/(5) (ii) (-5)/(8)+(-9)/(13)= (-9)/(13)+(-5)/(8) (iii) 3+(-7)/(12)=(-7)/(12)+3 (iv) (2)/(-7)+(12)/(-35)=(12)/(-35)+(2)/(-7)

Re-arrange suitably and find the sum in each of the following: (2)/(3)+(-4)/(5)+(1)/(3)+(2)/(5) (ii) (1)/(8)+(5)/(12)+(2)/(7)+(7)/(12)+(9)/(7)+(-5)/(16)

(12)/(7)+(12)/(7)-(12)/(7)-:(12)/(7)xx(12)/(7)=

Evaluate : (iv) (3)/(8)+(-5)/(12)+(3)/(7)+(3)/(12)+(-5)/(8)+(-2)/(7)

Choose the correct option 5/4-7/6-(-2)/3=\ (a) 3/4 (b) -3/4 (c) (-7)/(12) (d) 7/(12)

Evaluate (3cos^2 30^@ + sec^2 30^@ + 2 cos 0^@ + 3 sin 90^@ - tan^2 60^@) . (A) 5frac(7)(12) (B) 7frac(5)(12) (C ) 5frac(12)(7) (D) 12frac(5)(7)

{:("Quantity A","Quantity B"),((1)/(3)+(1)/(4)+(7)/(12),(1)/((1)/(3)+(1)/(4)+(7)/(12))):}