Question

Find a:b:c,given 3a+2b=7c and b=a+c

Answer 1

3a+2b=7c

or 2b=7c-3a

orb=(7c-3a)/2--------(1)

put value of b in equation

b=a+c

(7c-3a)/2=a+c

7c-3a=2a+2c

or 7c-2c=2a+3a

or 5c = 5a

or c=a

put c=a in equation (1)

b=(7a-3a)/2

or b=4a/2

b=2a

therefore

a:b:c = 1:2:1

Answer 2

Answer:

hello...This Is Ur Answer..!!

3a+2b=7c

or 2b=7c-3a  

orb=(7c-3a)/2--------(1)  

put value of b in equation  

b=a+c

(7c-3a)/2=a+c

7c-3a=2a+2c

or 7c-2c=2a+3a

or 5c = 5a

or c=a

put c=a in equation (1)

b=(7a-3a)/2

or b=4a/2

b=2a

therefore

a:b:c = 1:2:1

Step-by-step explanation:

thanks..

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