a) (2x+1)/(3x+5)=9/17
17(2x+1)=9(3x+5)
34x+17=27x+45
34x-27x=45-17
7x=28
x=28:7
x=4
b) (4x-7)/(5x-3)=25/37
37(4x-7)=25(5x-3)
148x-259=125x-75
148x-125x= -75+259
23x=184
x=184:23
x=8
c) (25-7x)/(32-5x)=4/17
17(25-7x)=4(32-5x)
425-119x=128-20x
-119x+20x=128-425
-99x= -297
99x=297
x=297:99
x=3
