Solve
`[-15/13]-[-4/26]=...`

Solve : [{12-(15-:3-2)}+6]-4

Solve : 2x+7=15

Fill in the blanks : (-4)/(13)-(-3)/(26)= ... (ii) (-9)/(14)+......=-1 (iii) (-7)/9+....=3 (iv) ..... +(15)/(23)=4

Solve (15)/4 -7 x = 9

Solve -11lt=4x-3lt=13

Solve : 3/(15)+7/(15)

Solve- (2/13)^(4/3)div(2/13)^(5/3)

Solve for x : 5+13+21+......+x=2139

Fill in the blanks: (-4)/(13)-(-3)/(26)= (ii) (-9)/(14)+=-1

Solve abs(x- 13)= 5 for x.