Question

if P= -1/2, Q= -2/5 and R=-3/4 then find [a] P+Q+R [B] P+Q-R [C] PxQ/R

Answer 1

I hope it will be right...

(a)-1/2-2/5-3/4

=-33/20

(b)-1/2-2/5+3/4

=13/20

(c)-1/2×-2/5÷-3/4

=1/3

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Answer 2

HOL@ M@T€

P = -1/2

Q = -2/5

R = 3/4

a) P+Q+R

= -1/2+(-2/5)+3/4

=-1/2-2/5+3/4

=-1/2-8/20+15/20

=-1/2+7/20

= -10+7/20

=-3/20

b)P+Q-R

=-1/2+(-2/5)-3/4

=-1/2-2/5-3/4

=-1/2-8/20-15/20

=-1/2-23/20

=-10-23/20

=-33/20

c)P × Q/R

=-1/2× (-2/5)/(3/4)

=-1/2 ×(-2/5)×(4/3)

=-1/2×(-8/15)

=8/30

Hope it helps you..

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