Solve the equation.
Solution:-
When we remove mod sign then value become positive but here both sides have mod so one time we take any one side positive and second time we take negative so here
First take positive we get
4s+7=s+9
4s-s=9-7
3s=2
S=
Now take negative
-(4s+7)=s+9
-4s-7=s+9
-4s-s=9+7
-5s=16
S= – 