October 2020 1 42 Report
Determinar a e b, de modo que os pares ordenados a seguir sejam iguais: 
a) (2a-2, b+3) e (3a+5, 2b-7)
b) (2a, a-8) e  (1-3b, b)
c) (a²+a, 2b) e (6, b²)
d) (b², |a|) e (4, 3)
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