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a-1-b-2-2-3-c-1-c-1-3-4-2a-c-10-

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Question Number 10091 by konen last updated on 23/Jan/17
((a−1)/(b−2)) =(2/3) ,((c+1)/(c−1))=(3/4) ⇒2a−c+10=?
a−1b−2=23,c+1c−1=34⇒2a−c+10=?
Answered by ridwan balatif last updated on 24/Jan/17
((a−1)/(b−2))=(2/3) 3(a−1)=2(b−2) 3a−3=2b−4 3a−2b=−1 the data is not enough, i just can predict the value of a and b if we put a=−1 and b=−1 3(−1)−2(−1)=−1 −1=−1(true) ((c+1)/(c−1))=(3/4) 4c+4=3c−3 c=−7 so,a=−1,b=−1,c=−7 2a−c+10=2(−1)−(−7)+10=15
a−1b−2=233(a−1)=2(b−2)3a−3=2b−43a−2b=−1thedataisnotenough,ijustcanpredictthevalueofaandbifweputa=−1andb=−13(−1)−2(−1)=−1−1=−1(true)c+1c−1=344c+4=3c−3c=−7so,a=−1,b=−1,c=−72a−c+10=2(−1)−(−7)+10=15

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