Question

a+b=72
a+c=48
b+c=64
a+b+c=?​

Answer 1

Answer:

Adding all three equations we get

a+b +a+c +b+c = 72+48+64

2 (a + b + c ) = 184

a+b+c = 92

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Answer 2

Given : a + b = 72

b + c = 64

a + c = 48

a + b = 72

a = 72 - b

b +c = 64

b = 64 - c

a + c = 48

c = 48 - a

a + b + c

put the value of a, b and c

72 -b + 64 - c + 48 - a

184 -a - b - c

-(a + b+ c) = -184

a + b+ c = 184