Question 2936
{{{b-2x=3b-4x}}}

Add 4x to both sides:
{{{b-2x+4x=3b-4x+4x}}}
Simplify:
{{{b+2x=3b}}}
Subtract b from both sides:
{{{b+2x-b=3b-b}}}
Simplify:
{{{2x=2b}}}
Divide both sides by 2:
{{{2x/2=2b/2}}}
Simplify:
{{{x=b}}} <font size="-1">(with infinitely many solutions)</font>

Check: Pick any number for X and use the same one for B: 10: 
{{{10-20=30-40}}}
Simplify:
{{{-10=-10}}}
Try another number: 5:
{{{5-10=15-20}}}
Simplify:
{{{-5=-5}}}<p><marquee behavior="alternate">Solved By: NtNk</marquee>