Multiply by (5x+1): 3=2(5x+1)/9
Multiply by 9: 27=2(5x+1)
Multiply out of brackets: 27=10x+2
Take away 2: 25=10x
Divide by 10: x=2.5
Hope this helps!
Why did the vector cross the road?
It wanted to be normal.
This can be explained in another way.
when you have a/b=c/d,
you get ad=bc.
In this problem,
3/(5x+1) = 2/9,
therefore, 9x3 = 2(5x+1)
Move 2 to the other side, by changing the sign,
27-2 = 10x,
x = 25/10 = 2.5
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.