Bonjour, a. - 2/11 * 11/(-5) =
1) -5/2
2) 2/5
3) -2/5
b. (2/7 + 3/7) ÷ 1/5 =
1) 1/7
2) 25/7
3) 17/7
c. 5/2 - 2/3 ÷ 5/3 + 2/3
1) 3/3 ÷ 7/3
2) 5/3 - 2/5 + 2/3
3) 3/3 * 3/5 + 2/3
d. (2+3)/(4*7) s'écrit aussi...
1) (2 + 3) ÷ (4 * 7)
2) (2 + 3) ÷ 7(4 * 7)
3) 2 + 3 ÷ 4 * 7
1) -5/2
2) 2/5
3) -2/5
b. (2/7 + 3/7) ÷ 1/5 =
1) 1/7
2) 25/7
3) 17/7
c. 5/2 - 2/3 ÷ 5/3 + 2/3
1) 3/3 ÷ 7/3
2) 5/3 - 2/5 + 2/3
3) 3/3 * 3/5 + 2/3
d. (2+3)/(4*7) s'écrit aussi...
1) (2 + 3) ÷ (4 * 7)
2) (2 + 3) ÷ 7(4 * 7)
3) 2 + 3 ÷ 4 * 7
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