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Answers
Answer:
4 +4
9 -3 okkkkkkkkkkkkkkkk
The values are a = 3.5 , b = 4.5 , c= 9.5 , d= 3.5
Step-by-step explanation:
Taking a,b,c,d
making equations
a+b = 8..(1)
c-d = 6..(2)
a+c = 13 ..(3)
b+d = 8 ..(4)
we can easily solve when we have 4 equations and 4 variables
thus subtracting 2 from 4
we get c+b = 14..(5)
similarly subtracting 1 from 3
we get c-b = 5 ..(6)
now ,solving equation 5 and 6 by elimination method
we get
c== 9.5
c = 9.5
now put the value of c in equation 2
c-d = 6
9.5 - d= 6
9.5 -6 = d
d = 3.5
now , place the value of c in equation 3 we get
a+ c = 13
a + 9.5 = 13
a = 13-9.5
a = 3.5
now , place the value of a in equation 1
a+b = 8
3.5 + b = 8
b = 8-3.5
b = 4.5
hence , The values are a = 3.5 , b = 4.5 , c= 9.5 , d= 3.5
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