Question

a+b=8,a+c=13,b+d=8,c+d=6
Find a,b,c,d

Answer 1

Answer:

a=3.5, d=3.5, b=4.5 and c=9.5

Step-by-step explanation:

c-d=6 => c=6+d  

a+c=13 => a+(6+d)=13 => a+d=7 => d=7-a  

b+d=8 => b+(7-a)=8 => b=a+1  

a+b=8 => a+b=(b+d) => a=d  

a+b=8 => a+a+1=8 => 2a=7 => a=3.5  

a+b=8 => b=4.5  

c-d=6 => c=9.5  

d=a => d=3.5