Qd= 30-2p

qs= -712+1.5p

qd=qs

Thus, 30-2p = -712+1.5

30+7.12 = 1.5p+2p

742 = 3.5p

742/3.5 = p

212 = p

Sub the Value of P in equation 1 to determine equibrium demand

qd= 30-2p

qd=30-2(212)

qd=30-424

qd= -394

Thus the equilbrium price is 212

and the equilbrium quantity demanded is -394 units

qs= -712+1.5p

qd=qs

Thus, 30-2p = -712+1.5

30+7.12 = 1.5p+2p

742 = 3.5p

742/3.5 = p

212 = p

Sub the Value of P in equation 1 to determine equibrium demand

qd= 30-2p

qd=30-2(212)

qd=30-424

qd= -394

Thus the equilbrium price is 212

and the equilbrium quantity demanded is -394 units