Verify the following: (a) `18xx[7+(-3)]=[18xx7]+[18xx(-3)]` (b) `(-21)xx[(-4)+(-6)]=[(-21)xx(-4)]+[(-21)xx(-6)]`

Verify the following: (a) 18xx[7+(-3)]=[18xx7]+[18xx(-3)](-21)xx[(-4)+(-6)]=[(-21)xx(-4)]+[(-21)xx(-6)]

.Verify the following: 18times[7+(-3)],=[18times 7]+[18times(-3)]

Find each of the following products: (a) 3 xx (-1) (b) (-1) xx 225 (c) (-21) xx (-30) (d) (-316) xx (-1) (e) (-15 xx 0 xx (-18) (f) (-12) xx (-11) xx (10) (g) 9 xx (-3) xx (-6) (h) (-18) xx (-5) xx (-4) (i) (-1) xx (-2) xx (-3) xx 4 (j) (-3) xx (-6) xx (-2) xx (-1)

Simplify (3)/(7) +(-2)/(21)xx(-5)/(6)

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))

Find each of the following products: i 3xx4xx(-5) ii 2xx(-5)xx(-6) iii (-5)xx(-8)xx(-3) iv (-6)xx6xx(-10) v 7xx(-8)xx3 vi (-7)xx(-3)xx4

Compute the following (i) 2xx6!-3xx5! (ii) 3xx4!+7xx4!

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

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

Verify that: (i) ((-3)/(16)xx(8)/(15))=((8)/(15)xx(-3)/(16)) (ii) (2)/(3)xx((6)/(7)xx(-4)/(15))= ((2)/(3)xx(6)/(7))xx(-14)/(15) (iii) (5)/(6)xx((-4)/(5)+(-7)/(10))=((5)/(6)xx(-4)/(5))+((5)/(6)xx(-7)/(10))