Răspuns
Explicație pas cu pas:
13/3 x 3/2 : 13/10 = 13/3 x 3/2 x 10/13 = 10/2 = 5
1 + 21/12 : 42/3 = 1 + 21/12 x 3/42 = 1 + 1/8 = 9/8
15/16 : 5/4 = 15/16 x 4/5 = 3/4
9/8 : 3/4 = 9/8 x 4/3 = 3/2
5: 3/2 = 5 x 2/3 = 10/3
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9/8 : 25/2 = 9/8 x 2/25 = 9 / 4x25
radical din 9 / 4 x 25 = 3/2x5 = 3/10