If x+y = 45 ; y+z= 63 and z+x = 36,then what is x +y + z is ?
a)136
b)144
c)72
d)22
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72 is the correct answer I think
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If x+y = 45 ; y+z= 63 and z+x = 36,then what is x +y + z is 144
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