Hey there!
The equation is not true.
To figure out whether or not the equation is true, first simplify the left side by distribution:
3(x+2)= 3x+6
Now, you have 3x+6=3x+5, which, at first glance is obviously not equal.
However, in order to be sure, simplify the equation further by subtracting like terms from both sides:
3x+6=3x+5
3x-3x+6=5
6=5
6 does not equal 5, therefore, you have have proven that 3(x+2)=3x+5 is not true.
Hope this helps!