Question

If a+b=5,b+c=6 and c+a=7 then find the value of a​

Answer 1

Answer:

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Step-by-step explanation:

If a+b=5 and b+c = 6, then we know that the value of c must be one more than a, as b stays the same, but the value is higher..

(b = 5-a, b = 6-c, so 5-a = 6-c, 5-a+c = 6, 5+c = 6+a, c = a+1).

So, we know that a + c is 7, and c is one more than a, so a+a+1 = 7. 2a = 6, so a = 3.

(If we check, it all works out

3+b = 5, so b is 2.

2+c = 6, so c is 4.

3 plus 4 is 7.)

Answer 2

Answer:

a = 3

Step-by-step explanation:

a + b = 5

b + c = 6

c + a = 7

if a + b =3 + 2 = 5

b + c = 2 + 4 = 6

c + a = 4 + 3 = 7

a = 3