How many solutions
100

4(x-1/4)=1/3(12x-3)

Infinitely many 

200

.25(5x-8)=1.25x-5

No solution

300

-2(x+.5)=-2.5(x-1)

One solution

400

10+3x=1/4(20-8x)

One Solution

500

4(x-3)=1/2(x/2+5)

One Solution