r(" iii ")7:14=15:x

Find x in the following proportions: (i) x\ :6=55\ : 11 (ii) 18\ : x=27\ :3 (iii) 7: 14=15\ : x (iv) 16\ : 18=x\ : 96

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

Factorise : 3x^2+14x+15

Factorise (i) x^(2)+9x+18 (ii) 6x^(2)+7x-3 (iii) 2x^(2)-7x-15 (iv) 84-2r-2r^(2)

Factorise (i) x^(2)+9x+18 " " (ii) 6x^(2)+7x-3 (iii) 2x^(2)-7x-15 " " (iv) 84-2r-2r^(2)

Evaluate each of the following: (-5)/(14)(-2)/(7) (ii) (13)/(15)-(12)/(25) (iii) (-6)/(13)-(-7)/(13)

(iii) ((-7)/(18)xx x(15)/(-7))-(1xx1/4)+(1/2xx1/4)'

(-8)times9+(-8)times7],[" (iii) "20times(-16)+20times14 , (-11)times(-15)+(-11)times(-25)