bonjour
4 - 2/7 x 7 /6
= 4 - 14 /42
= 168/42 - 14/42
= 154/42 = 11/3
- 3 /5 : - 12/25
= - 35/5 x - 25/12
= 420/60
= 7
( 6 x 10 ³)² = 6 ² x 10 ⁶ = 36 x 10 ⁶ = 36 000 000
10 ¹¹ x 10 ⁻² / 10 ³
= 10 ⁹ / 10 ³
= 10 ⁶
√100 + √49 = 10 + 7 = 17
√5/36 x √ 5 = √ 25/36 = 5/6
