Question

a+b=8
+ +
c-d=6
= =
13 8

Answer 1

Answer:

a= 7/2 , b=9/2 , c= 19/2 , d= 7/2 .

Step-by-step explanation:

(a+b=8 ) Let, this be equation one(1)

(c-d=6) this is equation two(2)

(a+c=13 ) This is Equation three(3)

(b+d = 8 ) This is Equation four(4)

This sum requires Some patience...Please do it again with care.

Add equations (2) and (4) and you get b+c = 14

Adding equations (1) and (3) you get [2a + b+ c= 21 ]

From solving above equations you get a=7/2

Then using the value of a solve the other equations..

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