1/4 a-1/3 b+ab a= -3 b= 3/2
a(2b+b)/2ab
1/4 a-1/3 b+ab a= -3 b= 3/2
a(2b+b)/2ab
basta sostituire!
1/4 * (-3) = - 3/4;
- 1/3 * 3/2 = - 1/2;
-3 * 3/2 = - 9/2;
1)
1/4 * (-3) - 1/3 * (3/2) + (- 3) * (3/2) =
= - 3/4 - 1/2 - 9/2 =
mcm = 4;
= - 3/4 - 2/4 - 18/4 = - 23/4.
2) - 5 * (2 * 3 + 3) / [2 * (-5) * 3] =
= - 5 * (+ 9) / (- 30) =
= - 45 / (- 30) =
si semplifica per 3 * 5 = 15:
= - 3 / (-2) = + 3/2.
Ciao @tobio_kageyama