Verify the following :
`(-10)xx{(-7)+(-9)}={(-10)xx(-7)}+{(-10)xx(-9)}`

Verify the following : {(-7)xx5}xx(-6)=(-7)xx{5xx(-6)}

Simplify the following: 2/3 xx 5/7div4/9

Find: a. (10)/(21) xx (7)/(15)

Simplify: (-3)/5xx\ (-(10)/9)xx\ ((21)/(-4))xx(-6)

Verify and state the property used in each of the following. (-7) times (19+4)=[(-7) times 19]+[(-7) times 4]

Calculate the following a. (6.7 xx 10^(5)) xx (4.6 xx 10^(4)) b. (7.6 xx 10^(7)) xx (3.8 xx 10^(-4)) c. (6.8 xx 10^(-3)) xx (5.2 xx 10^(-4)) d. (6.7 xx 10^(5)) / (4.6 xx 10^(4)) e. (7.6 xx 10^(7)) / (3.8 xx 10^(-4)) f. (6.8 xx 10^(-3)) / (3.8 xx 10^(-4)) g. 7.65 xx 10^(2) + 2.72 xx 10^(3) h. 7.87 xx 10^(-4) - 2.61 xx 10^(-5)

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

Express the following product in exponential form. a. (-5)^(14)xx(-7)^(14) b. (a)^(19)xx(-b)^(19) c. (3)^(21)xx5^(21) d. (6)^(9)xx(5)^(9) e. (x)^(13)xx(-y)^(13) f. (-7)^(32)xx(-9)^(32)

Which of the following is a vulgar fraction? 7/(10) (b) (13)/(1000) (c) 2 9/(10) (d) 7/9

Evaluate: ((-7))/(18)xx(9)/(14)