Bonsoir,
(2 + 3/4)/(3/4 - 5) =
(8/4 + 3/4) / (3/4 - 20/4) =
(11/4) / (-17/4) =
11/4 x -4/17 =
4/4 x -11/17 = (-11/17)
(35 x 10^2 x 2 x (10^(-2)^6) / (42 x 10^(-10)) =
(70/42) x 10^(2-12+10) =
(7x10)/(7x6) x 10^0 =
10/6 = (2x5)/(2x3) = 5/3
(3 x 10^4 + 5 x 10^(-3))/(10^(-2)) =
3 x 10^(4+2) + 5 x 10^(-3+2) =
3 x 10^6 + 5 x 10^(-1) =
3000000 + 0,5 = 3000000,5
