Răspuns:
Explicație pas cu pas:
a)
(-4/3)*(-5/8 + 1/4) = (-4/3)*(-5/8 + 2/8) = (-4/3)*(-3/8) = 1/2
b)
37/25 *(7/5 - 3/20) = 37/25 * (28/20 - 3/20) = 37/25 * 25/20 = 37/20
c)
-5/2 * (-1/2 - 3/5) = -5/2 * (-5/10 - 6/10) = -5/2 * -11/10 = 11/4
d)
0,75 =75/100 = 3/4
3/4 * (-7/3 - 5/6) = 3/4 * (-14/6 - 5/6) = 3/4 * -19/6 = -19/8
e)
2,25 = 225/100 = 9/4
9/4 * (-1/7 + 1/21) = 9/4 * (-3/21 + 1/21) = 9/4 * -2/21 = - 9/42 = -3/14
f)
1,1 = 11/10
11/10 * (3/11 - 1/22) = 11/10 * (6/22 - 1/22) = 11/10 * 5/22 = 1/4
