Question

repede,dau 45 puncte ex 7 de sus si testul 3 ex 2,3

Answer 1

ex7)
Ana are a lei, iar Bianca are b lei.
a + b = 117
a = 7 + 5/6 × b 
7 + 5/6 × b + b = 117
b(5/6 + 1) = 110
11b = 110 x 6
b = 60 lei
a = 117 - 60 = 57 lei

Testul 3
2) |-0,5 - 0,(3) + 1/3 + 1/2| = | -1/2 - 3/9 + 1/3 + 1/2| = |-1/3 + 1/3| = 0
|-0,5| + |-0,(3)| + |1/3| + |1/2| = 1/2 + 1/3 + 1/3 + 1/2 = 1 + 2/3 = 5/3

3) Cel mai mare numar este: 3,5
Cel mai mic numar este: -4,5
3,5 - (-4,5) = 3,5 + 4,5 = 8