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Verified answer
3/5 x 5/6 + 4/5 - 9/10 ÷ 3/4 = 15/30 + 4/5 - 13/30 ⇒ 15/30 + 24/30 - 13/30= 26/30 ⇒ 13/15
=15/30 + 4/5 - 9/10 × 4/3
=1/2 + 4/5 - 36/30
=1/2 + 4/5 - 6/5
=5/10 + 8/10 - 12/10
=1/10
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