Réponse:
x*y
a. =6/2 * 2/3 = 4/5 = 0,8
b.= 7/9 * 7/9 = 49/81 environ = 0,60
x÷y
a. = 6/5 ÷ 2/3 = 9/5 = 1,8
b. = 7/9 ÷ 7/9 = 1
1/x*1/y
a. = 1/(6/5)×1/(2/3) = 5/4 = 1,25
b. =1/(7/9)×1/(7/9) = 81/49 environ = 1,65
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Réponse:
x*y
a. =6/2 * 2/3 = 4/5 = 0,8
b.= 7/9 * 7/9 = 49/81 environ = 0,60
x÷y
a. = 6/5 ÷ 2/3 = 9/5 = 1,8
b. = 7/9 ÷ 7/9 = 1
1/x*1/y
a. = 1/(6/5)×1/(2/3) = 5/4 = 1,25
b. =1/(7/9)×1/(7/9) = 81/49 environ = 1,65