if (2p+q,1)=(11,p-3q) find the value of p-7q
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Answer:
25/7
Step-by-step explanation:
(2p+q,1)=(11,p-3q)
By comparing both side
2p+q=11 (i)
p-3q=1 (ii)
multiplying by 3 in equation (i)
6p+3q=33 (iii)
Add equation (ii) and (iii)
7p =34
p=34/7
substitute value of p in equation (i)
2*34/7+q=11
q =11-68/7
q=(77-68)/7
q=9/7
so
p-7q = 34/7-9/7
= 25/7
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