1. 108:90=42:5х
1.2=x
*1.2=x
*=x
=x
x=
2.(7х-3)/4 = (5-2х)/6
6(7x-3)=4(5-2x)
42x-18=20-8x
42x+8x=20+18
50x=38
3. 5/2х = 3/(4-х)
x=, x4
5x=
5x*(4-x)=6
5x*(4-x)-6=0
20x--6=0
-+20x-6=0
5x2-20x+6=0
x= x=
x= x=, x4
x_{1} = x_{2} =
5. 2/(6-х)= 4/(5х+3)
, x
1. 108:90=42:5х
1.2=
x
x=
2.(7х-3)/4 = (5-2х)/6
6(7x-3)=4(5-2x)
42x-18=20-8x
42x+8x=20+18
50x=38
x=
3. 5/2х = 3/(4-х)
5x=
5x*(4-x)=6
5x*(4-x)-6=0
20x-
-6=0
-
+20x-6=0
5x2-20x+6=0
x=
x=
x=
x=
x=
x=
x=
x=
, x
4
x_{1} =
x_{2} =
5. 2/(6-х)= 4/(5х+3)