a+b=8,c-d=6,a+c=13,b+d=8 then find a,b,c,d
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a=3.5, b=4.5 c=9.5, d=3.5
Step-by-step explanation:
if we add c-d + b+d = c+b
=>6+8=c+b
c+b = 14
if we add a+b=8 and a+c= 13, than we get 2a+c+b=21
using c+d value from above, we get
2a=7 so, a=3.5
by using a value in a+b=8
we can find b=4.5
using b value in b+d= 8
we get d=3.5 and using a value in a+c=13, we get c=9.5
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