Simplify: `(-3)/(10)+7/(15)+3/(-20)+(-9)/(10)+(13)/(15)+(13)/(-20)`

Simplify: 3/(10)+7/(15)+3/5

Simplify: 3/(10)+7/(15)+3/5

Evaluate : (i) (3)/(4)+(5)/(6)+(-1)/(4)+(-7)/(6) (ii) (9)/(-10)+(4)/(15)+(-3)/(20)+(-3)/(10)+(8)/(15)+(9)/(-20)

Simplify: ((13)/(9)x(-15)/(2))+((7)/(3)x(8)/(5))+((3)/(5)x(1)/(2))

Simplify: 1/(1+(2/3)/(1+2/3+(8/9)/(1-2/3))) . (11)/(13) (b) (13)/(15) (c) (13)/(11) (d) (15)/(13)

Add (-13)/(20) and (14)/(15) .

Simplify each of the following and write as a rational number of the form (p)/(q):(-9)/(10)+(22)/(15)+(13)/(-20) (ii) (5)/(3)+(3)/(2)+(-7)/(3)+3

[[1,0,-13,4,50,-6,-7]]=[[(1)/(10),(3)/(10),(1)/(5)(21)/(20),-(7)/(20),-(2)/(5)-(9)/(10),(3)/(10),(1)/(5)]]

Simplify: ((13)/9xx(-15)/2)+\ (7/3xx8/5)+(3/5xx1/2)