Question

Find the values of a, b, c and d, if
[a+b+c+d]=[4]
[a+c-d]=[1]
[b-c+d]=[1]
[a+d]=[2]​

Answer 1

Answer:

a=1 , b=1 , c=1 and d=1

Step-by-step explanation:

If we take a,b,c and d as 1

then , 1+1+1+1 =4

1+1-1=1

1-1+1=1

1+1=2