29a)(x-5)/(x+3)=1/3
3(x-5)=x+3
3x-5=x+3
3x-x=3+5
2x=8
x=8/2=4
b) (36-x)/(42-x)=4/5
5(36-x)=4(42-x)
180-5x=168-4x
-5x+4x=168-180
-5x=-12 (-1)
x=12/5
d) (35-x)/2=(15+x)/3
3(35-x)=2(15+x)
105-3x=30+2x
-3x-2x=30-105
-5x=-75 (-1)
x=75/5
x=15
e) (6x+11)/(5x+8)=1,2(7)
1,2(7)=(127-12)/90=115/90=23/18.
(6x+11)/(5x+8)=23/18
18(6x+11)=23(5x+8)
108x+198=115x+184
108x-115x=184-198
-7x=-14 (-1)
x=14/7
x=2
