bonjour,
( 2 + 3/4) : ( 3/4 - 5) = - 11/17
( 8/4 + 3/4) : ( 3/4 - 20/4) = - 11/7
11/4 : - 17/4 = - 11/7
11/4 x - 4/17 = - 44 / 68 = - 11/17
35 x 10 ² x 2 x ( 10 ⁻²)⁶ sur 42 x 10 ⁻¹⁰
= 70 x 10 ² x 10 ⁻¹² sur 42 x 10 ⁻¹⁰
= 70 x 10 ⁻¹⁰ sur 42 x 10 ⁻¹⁰
= 70/42 x 10 ⁰
= 70/42 = 5/3
3 x 10 ⁴ + 5 x 10 ⁻³ sur 10 ⁻²
= 30 000 + 0.005 sur 0.01
= 30 000.005 : 0.01 = 3 000 000.5
