Sagot :
Bonjour,
1) x = (1.4 * 1.2) / 9 = ...
2) x = (2.5 * 0.14) / 0.49 = ...
3) x = 10 car 10/10 = 1
4) x = 5.2 * 0.35 = ...
bonjour
1. 9 x = 1.68
x = 168/900 = 14/75
2. 0.49 x = 0.35
x = 35/49
4. x² = 100
x = √ 100 = 10 ou - √100 = ( - 10 )
5. pas de x tu as fait un calcul