Sagot :
Bjr,
756/441 + 19/21 = 756/441 + (19 * 21)/(21 * 21) = 756/441 + 399/441 = 1155/441 = (21 * 55)/(21 * 21) = 55/21.
A = 756/441 + 19/21
A = 21×36 /21×21 + 19/21
A = 36/21 + 19/21
A = 55/21
Voila j'espère avoir pu t'aider
Bjr,
756/441 + 19/21 = 756/441 + (19 * 21)/(21 * 21) = 756/441 + 399/441 = 1155/441 = (21 * 55)/(21 * 21) = 55/21.
A = 756/441 + 19/21
A = 21×36 /21×21 + 19/21
A = 36/21 + 19/21
A = 55/21
Voila j'espère avoir pu t'aider