[(5i)(-5)+(-8)+(-11)+...4(-25)],[(" iv ")*5+(-41)+9+(-39)+13+(-37)+17+...+(-5)+81+(-3)],[]

3(5a-7)-2(9a-11)=4(8-13-1)

Find the sum of the following series : 5+(-41)+9+(-39)+13+(-37)+17+....+(-5)+81+(-3)

Add the following rational numbers : (i) (12)/(7) and (3)/(7) : (ii) (-2)/(5) and (1)/(5) (iii) (3)/(8) and (1)/(8) (iv) (-5)/(11) and (7)/(-11) (v) (9)/(-13) and (-11)/(-13) (vi) (-2)/(9) and (5)/(9) (vii) -(17)/(9) and (-11)/(9) (viii) (-3)/(7) and (5)/(-7)

Evaluate : (i) (3)/(4)-(4)/(5) (ii) -3-(4)/(7) (iii) (7)/(24)-(19)/(36) (iv) (14)/(15)-(13)/(20) (v) (4)/(9)-(2)/(-3) (vi) (7)/(11)- (-4)/(-11) (vii) (-5)/(14) -(-2)/(7) (viii) (-5)/(-8)-(-3)/(4)

Find the sum : (i) 5/4 + ((-11)/(4)) , (ii) 5/3 + 3/5 , (iii) (-9)/(10) + 22/15 (iv) (-3)/(-11) + 5/9 , (v) (-8)/(19) + ((-2))/(57) , (vi) (-2)/(3) + 0 (vii) -2'1/3 + 4'3/5

Multiply: (i) (-2)/9b y5/(11) (ii) (-3)/(17)b y(-5)/(-4)

Add the following rational numbers: {:((i) (-2)/(5) and (4)/(5),(ii) (-6)/(11) and (-4)/(11) , (iii) (-11)/(8) and (5)/(8)), ((iv) (-7)/(3) and (1)/(3),(v) (5)/(6) and (-1)/(6),(vi) (-17)/(15) and (-1)/(15)):}

Evaluate: (i) 5/6-7/8 , (ii) 5/12 -17/18 , (iii) 11/15 - 13/20 , (iv) -5/9 - (-2/3) , (v) 6/11 -(-3/4) , (vi) -2/3 -3/4