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))`

Verify each of the following: (i) (3)/(7)xx(-5)/(7) = (-5)/(9)xx(3)/(7) (ii) (8)/(7) xx (13)/(9) = (13)/(9) xx (-8)/(7) (iii) (-12)/(5)xx (7)/(-36) = (7)/(-36) xx (-12)/(5) (iv) -8 xx (-13)/(12) = (-13)/(12)xx(-8)

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

(3)/(5)xx(-(12)/(7))xx(15)/(2)xx(49)/(24)

Find each of the following products: (i) (-3)/(7)xx(14)/(5)" " (ii) (13)/(6) xx (-18)/(91) " " (iii) (-11)/(9) xx (-51)/(44)

Name the property of multiplication shown by each of the following statements: (i) (-12)/(5) xx (3)/(4)=(3)/(4)xx (-12)/(5) (ii) (-8)/(15) xx 1=(-8)/(15) (iii) ((-2)/(3) xx (7)/(8)) xx (-5)/(7) = (-2)/(3) xx ((7)/(8) xx (-5)/(7)) (iv) (-2)/(3) xx 0=0 (v) (2)/(5) xx ((-4)/(5) +(-3)/(10)) = ((2)/(5) xx (-4)/(5)) +((2)/(5)xx (-3)/(10))

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)):}

{(7)/(5)xx((-3)/(12))}+{(7)/(5)xx(5)/(12)}

Simplify each of the following: (i) 124-(12-2)xx 9 (ii) (13+7)xx (9-4)-18 (iii) 210-(14-4)xx (18+2)-10

Simplify : (i) (3)/(20)xx(4)/(5) (ii) (-7)/(30)xx(5)/(14) (iii) (5)/(-18)xx(-9)/(20) (iv) (-9)/(8)xx(-16)/(3) (v) -32xx(-7)/(36) (vi) (16)/(-21)xx(-14)/(5)