Question 30753
(3x+2)/5=7/10 

multiply both sides by 5 and we get 

3x+2 =7/2

subtract 2 from both sides and we get 

3x = (7/2)-2

on solving RHS we get ...

3x = 3/2

now divide both sides by 3 and we get 

x  = 1/2

Now if you want to  verify you answer ,,,you can put the values of x in the equation and if you get LHS=RHS,,,this means that you answer is correct..

Try to solve the other problem in the same ways ,,,,

Still if you won't be able to solve further, contact me again. 

hope this will help you 

Please feel free to revert back for any further queries .