Răspuns :
a) 3 3/5 x +1 = 2x +9/4
18/5 x +1 = 2x +9/4
72x+20=40x+45
32x=25
x=25/32
b)4x/3+1=x+5,3
4x+3=3x+15,9
x=12,9
x=129/10
c)1 1/9 x +0,5=x+6,7
10x/9=x+6,2
10x=9x+55,8
x=55,8
x=558/10=279/5
d)2x+8=x+15
x=7
e) 0,(8)+3x=2x+6
8/9+x=6
x=6-8/9
x=46/9
f)3x+6,(2)=x+11,(4)
3x+(62-6)/9=x+(114-11)/9
3x+56/9=x+103/9
27x+56=9x+103
18x=47
x=47/18
18/5 x +1 = 2x +9/4
72x+20=40x+45
32x=25
x=25/32
b)4x/3+1=x+5,3
4x+3=3x+15,9
x=12,9
x=129/10
c)1 1/9 x +0,5=x+6,7
10x/9=x+6,2
10x=9x+55,8
x=55,8
x=558/10=279/5
d)2x+8=x+15
x=7
e) 0,(8)+3x=2x+6
8/9+x=6
x=6-8/9
x=46/9
f)3x+6,(2)=x+11,(4)
3x+(62-6)/9=x+(114-11)/9
3x+56/9=x+103/9
27x+56=9x+103
18x=47
x=47/18
a 18x/5+1=2x+9/4 numitorul 20
72x+20=40x+36
72x-40x=36-20
32x=16
x=16/32=1/2=0,5
b 4x/3+1=x+35/10
4x/3+1=x+7/2 numitorul 6
8x+6=6x+21
8x-6x=21-6
2x=15
x=15/2=7,5
c 10x/9+1/2=x+67/10 numitorul 90
100x+45=90x+603
100x-90x=603-45
10x=558
x=558/10=279/5=55,8
d 2x+8=x+15
2x-x=15-8
x=7
e 8/9+3x=2x+6
8+27x=18x+54
27x-18x=54-8
9x=46
x=46/9=5.(1)
f 3x+62-6/9=x+114-11/9
27x+56=9x+103
27x-9x=103-56
18x=47
x=47/18=2,6(1)
72x+20=40x+36
72x-40x=36-20
32x=16
x=16/32=1/2=0,5
b 4x/3+1=x+35/10
4x/3+1=x+7/2 numitorul 6
8x+6=6x+21
8x-6x=21-6
2x=15
x=15/2=7,5
c 10x/9+1/2=x+67/10 numitorul 90
100x+45=90x+603
100x-90x=603-45
10x=558
x=558/10=279/5=55,8
d 2x+8=x+15
2x-x=15-8
x=7
e 8/9+3x=2x+6
8+27x=18x+54
27x-18x=54-8
9x=46
x=46/9=5.(1)
f 3x+62-6/9=x+114-11/9
27x+56=9x+103
27x-9x=103-56
18x=47
x=47/18=2,6(1)