Find `(1)/(3)xx (-5)/(7) xx (-21)/(10)`

Verify each of the following: (i) ((5)/(7)xx (12)/(13))xx(7)/(18)= (5)/(7) xx ((12)/(13)xx(7)/(18)) (ii) (-13)/(24)xx((-12)/(5)xx(35)/(36))=((-13)/(24)xx(-12)/(5))xx (35)/(36) (iii) ((-9)/(5)xx (-10)/(3)) xx (21)/(-4) = (-9)/(5) xx ((-10)/(3) xx (21)/(-4))

Using appropriate properties, find (2)/(3)xx (-5)/(7) +(7)/(3) +(2)/(3) xx (-2)/(7) .

Simplify : (-5)/(9) xx ((-10)/(13)) xx ((21)/(11)) xx (-7)

Fill in the blanks: (i) (-23)/(17)xx (18)/(35)= (18)/(35) xx (.......) (ii) -38xx(-7)/(19)=(-7)/(19)xx (.....) (iii) ((15)/(7)xx (-21)/(10)) xx (-5)/(6) = (........) xx ((-21)/(10) xx (-5)/(6)) (iv) (-12)/(5) xx ((4)/(15)xx (25)/(-16))=((-12)/(5)xx (4)/(15))xx(........)

Find (2)/(5)xx(-3)/(7)-(1)/(14)-37xx(3)/(5)

-(3)/(7)xx(6)/(5)+(1)/(10)xx(3)/(2)-(6)/(5)xx(1)/(14)

Simplify : [ ((- 3 )/( 2) xx (4)/(5) ) + ((9)/(5) xx (-10)/( 3)) - ((1)/(2)xx (3)/(4)) ] div [ ((21)/( 9) xx (3)/(7)) +((7)/(8) xx (16)/(14)) ]

Find each of the following products: {:((i)(3)/(5)xx(-7)/(5),(ii)(-9)/(2) xx (5)/(4),(iii)(-6)/(11) xx (-5)/(3)),((iv) (-2)/(3) xx (6)/(7),(v)(-12)/(5)xx(10)/(-3),(vi) (25)/(-9)xx(3)/(-10)), ((vii) (5)/(-18)xx(-9)/(20),(viii) (-13)/(15) xx (-25)/(26), (ix) (16)/(-21)xx(14)/(5)), ((x) (-7)/(6) xx 24,(x i) (7)/(24)xx (-48), (x ii) (-13)/(5)xx(-10)):}

Find the product: (i) (9)/(2)xx((-7)/(4)) (ii) (3)/(10)xx(-9)( iii) (-6)/(5)xx(9)/(11) (iv) (3)/(7)xx((-2)/(5))( v) (3)/(-5)xx(-5)/(3)