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= 4/5
Moga bener vroh!
=3×3a-1×5a/6b ×6b/5a
=3×3a-5a/6b ×6b/5a
=9a-5a/6b ×6b/5a
=4a/6b ×6b/5a
=2a/3b ×6b/5a
=2/3b ×6/5b
=2/3 ×6/5
=2 ×2/5
=4/5