Question

va rog mult ajutatima dau coroana
de la ex 1,2,3,4,5
punctele:(h,b,e,h,b,e,h,b,e,h,b,e

Answer 1

1.
h)x+2 întregi 3/8 =1 întreg 5/6
x+2 ori 8+3/8=1 ori 6+5/6
x+16+3/8=6+5/6
x+19/8=11/6
x+19/8 amplifici cu 6=11/6 amplifici cu 8
x+114/48=88/48
x=114/48-88/48
x=26/48 simplifici cu 2
x=13/24
b)x+1 întreg 2/3=5/6
x+1 ori 3+2/3=5/6
x+3+2/3=5/6
x+5/3 amplifici cu 6=5/6 amplifici cu 3
x+30/18=15/18
x=30/18-15/18
x=15/18 simplifici cu 3
x=5/6
restul nu am înțeles cerinta

Answer 2

2)a)15-12=8
15x=20
x=4/3
b)6x-8=3
6x=11
x=11/6
c)x-3/7=-5/21
21x-9=-5
x=4/9
d)x-3/4=-13/10
20x-15=-26
x=-11/20
e)x+4/9=5/12
36x+16=15
x=-1/36

3)a)7x/8=5/4
x=40/28=10/7
b)5x/24=-55/48
x=-11/2
d)7x/12=5/4
x=60/28=15/7

4)a)x:1/3=3/2
x=1/2
b)x:2/7=-7/3
x=-2/3
d)x:(-2/9)=-18
x=-18·(-2/9)
x=4
e)x:11/14=-6
x=-6·11/14=-66/14=-33/7

5)a)14:x=2/5
x=14:2/5
x=35
b)-7/12:x=2/3
x=-7/12·3/2=-21/24=-7/8