bonjour
90/189 + 45/84 - 75/126
= 10/21 + 15/28 - 25/ 42
= 40/84 + 45/84 - 50/84
= 35/84
= 5 /12
77/35 - 80/66 - 56/105
= 11/5 - 40/33 - 8/15
= 363/165 - 200/165 - 88/165
= 75/165
= 5/11
96 / 160 + 57/105 - 39/77
= 3/ 5 + 19/ 35 - 39/77
= 231/385 + 209/385 - 195/385
= 245/385
= 7/11
Explications étape par étape
