Question

If a = 2b +c, b = 2c + d, 2c = d+a -1, d =a - c. Find b

Answer 1

Answer:

this answer will help you

Answer 2

Answer: b=2/9

Step-by-step explanation:

a=2b+c

b=2c+d

⇒ b= 2c+a-c = c+a

b=c+a

2c=d+a-1

since d=a-c we can substitude the value of d to the expression

⇒2c= a-c+a-1 = 2a-c

c=b-a { b=a+c so c= b-a]

3(b-a)=2a-1

=3b-3a=2a-1

3b= 5a-1 → equation 1

a=2b+b-a

0=3b-2a

2a=3b

3b=2a→ equation 2

subtracting equation 1 and 2 we get , 0=3a-1

3a=1

a=1/3

substuting the value 3b=2a

3b=[1/3]*2

3b=2/3

b=2/3*1/3 =2/9

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