solve this ` (6/7xx3/4) + (6/7xx11/4)`

Find the product:   (i) 3 6/7xx4 2/3   (ii) 6(11)/(14)xx3 1/2

Multiply and reduce to lowest form : (i) 7 xx 3/5 (ii) 4 xx 1/3 (iii) 2 xx 6/7 (iv) 2/3 xx 4 (v) 5/2 xx 6 (vi) (11) 4/7 (vii) 20 xx 4/5 (viii) 13 xx 1/3 (ix) 15 xx 3/5

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)

Simplify and express each of the following as power of a rational number: (2/3)^3xx(-6/7)^2xx(-7/4)xx3/2

Multiply and express as a mixed fraction : (a) 3 xx 5 1/5 (b) 5 xx 6 3/4 (c) 7 xx 2 1/4 (d) 4 xx 6 1/3 (e) 3 1/4 xx 6 (f) 3 2/3 xx 8

The sum of the series 1 + 2 xx 3 + 3 xx 5 + 4 xx 7+ ...upto 11th term is

Evaluate the following : 7xx4xx(-6)xx8

Find the product. -3(6)/(7)xx5(4)/(9)

Solve : x/2+x/4=x/6+7/6

Solve 84-:4+7xx3-11