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a₁ * a₂ = (-1)
a) a₂=-7
a₁*(-7)=(-1)/ :(-7)
a₁=1/7
b) a₂=5/6
a₁*5/6=(-1)/ *6/5
a₁=(-1,2)
c) a₂=3/4
a₁*3/4=(-1)/ *4/3
a₁=(-4/3)
d) a₂=-7/9
a₁*(-7/9)=(-1)/ (-9/7)
a₁=9/7
Pozdrawiam,
matteushq