Răspuns:
x-5 / x+3 =2/3
3(x-5) =2(x+3)
3x-15 =2x+6
3x-2x=6+15
x=21
b) 2x-3 /3x-3 =1/3
3(2x-3) =3x-3
6x-9=3x-3
6x-3x= -3+9
3x=6
x=2
c)4x-5/7 =x+5/3
3(4x-5 )=7(x+5)
12x-15 =7x+35
12x-7x=35-15
5x=50
x=10
d) 3x-7/5 =2x-6/3
3(3x-7)=5(2x-6)
9x-21 =10x-30
10x-9x=30-21
x=9
Explicație pas cu pas:
