Bonjour,
1-5/2x4/15
1- 20/ 30
= 1- 2/3
= 3/3 - 2/3
= 1/3
Bonjour
Fraction irréductible:
= 1 - 20/30
= (1 x 3) / (1 x 3) - (10 x 2) / (10 x 3)
= 1/3.
