Bonsoir,
5/3+2/3 ÷ 2/5-1/7
= 5/3 + 2/3 x 5/2 - 1/7
= 5/3 + 10/6 - 1/7
= (5 x 14) / (3 x 14) + (10 x 7) / (6 x 7) - (1 x 6) / (7 x 6)
= 70/42 + 70/42 - 6/42
= 134/42
= (2 x 67) / (2 x 21)
= 67/21
Copyright © 2024 ELIBRARY.TIPS - All rights reserved.
Lista de comentários
Verified answer
Bonsoir,
5/3+2/3 ÷ 2/5-1/7
= 5/3 + 2/3 x 5/2 - 1/7
= 5/3 + 10/6 - 1/7
= (5 x 14) / (3 x 14) + (10 x 7) / (6 x 7) - (1 x 6) / (7 x 6)
= 70/42 + 70/42 - 6/42
= 134/42
= (2 x 67) / (2 x 21)
= 67/21