Răspunsuri

2014-06-13T15:23:30+03:00
A) 5(x-7)-3(x-3)+17=11
5x-35-3x+9+17=11
2x=11+35-9-17
2x=20
x=20:2
x=10

b) -3(x+1)-2(1-2x)-(x+5)=17-x
-3x-3-2+4x-x-5=17-x
-3x-x+4x+x=17+3+2+5
x=27
2014-06-13T15:23:34+03:00
A)5x -85-3x+9+17=11

2x-85+26=11

2x-59=11

2x=11+59

2x=70
x=35

b)-3x-3 -2+4x-x-5=17-x
-4x+4x-10=17-x

-10=17-x
-10-17=-x
-27=-x

x=27