" (iii) "[(-19)/(29)times(25)/(-19)=1],[" Multiply "(6)/(13)" by the reciprocal of "(-7)/(16)" ."]

Multiply frac(6)(13) by the reciprocal of frac(-7)(16) .

Multiply -(7)/(19) by the reciprocal of (5)/(13)

Multiply -7/19 by the reciprocal of 5/13.

7m+(19)/(2)=13

Multiply the 2.9 xx 0.7

Find the multiple inverse or reciprocal of each of the following : (i) 18 (ii) -16 (iii) (13)/(25) (iv) (-17)/(12) (v) (-6)/(19) (vi) (-3)/(-5) (vii) -1 (viii) 0

cos. (3pi)/(19) + cos . (7pi)/(19) + cos. (12pi)/(19) + cos. (16pi)/(19) =

Name the property under multiplication used in each of the following. (i) (-4)/5 xx 1 = 1 xx (-4)/5 (ii) (13)/(17) xx (-2)/7 = (-2)/7 xx (-13)/(17) (iii) (-19)/(29) xx (29)/(-19) =