Question

Given a + b = 8

a + c = 13

b + d = 8

c - d = 6

What are the values of a, b, c, d?

(a, b, c, d MAY BE OR MAY NOT BE equal to each other)

Answer 1

Answer:

a=3•5

b=4•5

c=9•5

d=3•5

Step-by-step explanation:

keeping equation 1 equal to equation 3, we get a=d.

in equation 2 and 4 keep d=a and solve togehter and get value of c.

put value of c in eq 2 or 4 and get value of a and d similiarly value of b.