OBLICZ WARTOŚĆ WYRAŻENIA (2 1/2 : 3/4 : 9/8)* 3/22 + 2 1/5 =
( 2 1/2 :3/4 : 9/8) · 3/22 + 2 1/5 = ( 5/2 · 4/3 : 9/8) · 3/22 + 2 1/5 = ( 10/3 · 8/9 ) · 3/22+ 2 1/5 = 80/27 · 3/22 + 2 1/5 = 40/ 99 + 2 1/5 = 200/495 + 2 99/495 = 2 299/ 495
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( 2 1/2 :3/4 : 9/8) · 3/22 + 2 1/5 = ( 5/2 · 4/3 : 9/8) · 3/22 + 2 1/5 = ( 10/3 · 8/9 ) · 3/22+ 2 1/5 = 80/27 · 3/22 + 2 1/5 = 40/ 99 + 2 1/5 = 200/495 + 2 99/495 = 2 299/ 495