Question

Ex 10 va rog.................multumesc

Answer 1

ema-a victor-b daria-c
a+b=158
b+c=144
a+b+c=217
158+c=217
c=217-158=59
a+144=217
a=217-144
a=73
a+b+c=217
59+73+c=217
132+c=217
c=217-132
c=85

Answer 2

ema-x victor-y daria-z
x+z=158
y+z=144
x+y+z=217
158+z=217
z=217-158=59
x+144=217
x=217-144
x=73
x+y+z=217
59+73+z=217
132+z=217
z=217-132
z=85