SOLUTION: the sum of a,b and c is 14. if 9a + 8b + 6c = 101, what is the value of 2a + b -c?

Question 749356: the sum of a,b and c is 14. if 9a + 8b + 6c = 101, what is the value of 2a + b -c?
Answer by tommyt3rd(5050) (Show Source): You can put this solution on YOUR website!
9a + 8b + 6c = 101 and a+b+c=14 so if we multiply every term by 7 we get: 7a+7b+7c=98
and if we subtract the result from the first equation we get 2a+b-c=3

so it's 3

:)
RELATED QUESTIONS
Given that S=7a+b+7c and also S=6a+8b+6c, where 51 (answered by greenestamps)
Given that S=7a+b+7c and also S=6a+8b+6c, where 51 (answered by greenestamps)
If 64�2a=8b-5 and b= 4, then why is the real number value of a? (answered by Fombitz)
If a and b are positive and 16a^3 * b^-4 = 2a what is a^-2 in terms of b? (A) -8b... (answered by greenestamps)
c=b+4 b=3(a+1) c=2a+7 What is the value of a, b and... (answered by checkley77)
If a/b=6/7 and a/c=2/5,what is the value of 3b+c in terms of a? (A)12a (B)9a (C)8a... (answered by stanbon,Alan3354)
Can you help me solve this system of equations for a,b,c and d: 2a-4b+6c-2d=-6... (answered by Edwin McCravy,ikleyn)
If 2a = 5b and 5b=6c, what does a equal in terms of c? A. 6/5 c B) 3c C) 15c D) 30c (answered by Edwin McCravy)
If 2a = 5b and 5b=6c, what does a equal in terms of c? A. 6/5 c B) 3c C) 15c D) 30c (answered by josgarithmetic)