Răspunsuri

2014-03-28T16:45:58+02:00
A+b=102 (1)
a=7b+6 
8b+6=102 => 8b=96 =>b=96:8 =>b=12 (2)
(1),(2) => a=102-12=90 <=> a=90

2014-03-28T16:49:01+02:00
X+y=102 (1)
x=7y+6 
8y+6=102 =
 8y=96 =
y=96:8 =
y=12 (2)
(1),(2) =
x=102-12=90 <=> x=90

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