Question

Ajutor,dau coroana primului care raspunde

Answer 1

a)1.
2/3+7/5+4/15=(10+21+4)/15=35/15=7/3
a)2.
1/2+3/4-3/4=(2+3-4)/4=1/4=0.25
a)3.
1/3-1/4=(4-3)/12=1/12
a)4.
3/7-13/14-1/2=(6-13-7)/14=-14/14=-1

b)1.
3/8-1/2-3/4=(3-4-6)/8=-7/8
b)2.
-7/12+3/4-1/6+5/8-17/28=2/12-11/24-17/28=-7/24-
-17/28= -49-102 /168=-151/168
b)3.
2.3-6,1=-3,8

c.1
1.2-5,7+4,62=5,82-5,7=0.12
c2.
23,56+5-63,64-0,56+0,04=28,6-64,2= 35,6