Răspuns
Explicație pas cu pas:
a) 3 / 4 : 6 / 5 = 3 / 4 × ( 5 / 6) = 15 / 24 = 5 / 8 → c) 5 / 8
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b) 9 / 8 : 9 / 4 = ( 9 / 8 ) × ( 4 / 9 ) = ( 9 / 9 ) × ( 4 / 8 ) = 1 / 2 → f) 1/2
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c) 2 : 8 / 3 = 2 × ( 3 / 8) = ( 2/ 8) × 3 = 3 / 4 → a ) 3 / 4
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d) 8 / 2 : 2 = 4 : 2 = 2 → d) 2
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e) 8 / 21 : 4 / 7 = 8 / 21 × ( 7 / 4 ) = ( 7 / 21 ) ×( 8 / 4) = 2 / 3 → b) 2/3