Odpowiedź:
a) x/3 + 1= 5/6 +x/2. |*6
2x +6= 5+ 3x | -2x
6= 5+x |-5
1=x
b) (2x+3)/5 = (2-x)/3 +x. |*15
3(2x+3)= 5(2-x) +15x.
6x+9= 10-5x +15x | -6x
9= 10+ 4x |-10
4x= -1. |:4
x= -1/4
c) 2/5(3-x) =-2
6/5-2/5x= -2 |*5
6- 2x= -10 |+2x
6= -10 +2x |+10
16= 2x |:2
8=x
d) (3x-5)/2- (5x-1)/10= 0 |*10
15x-25- 5x+1= 0
10x-24= 0 |+24
10x= 24 |:10
x= 2,4
e)1 -6/7x= 4/7. |*7
7- 6x=4 |+6x
7= 4+6x |-4
3= 6x |:6
3/6= 1/2= x
