Can you help me??

The first help I can offer is to change your screen name. So many students use names that can only discourage them (and others); why do that?

As for the problem itself, think about how you would solve the equation 2x = 6. What operation will undo the multiplication?

Then try doing the same thing for your actual problem.
 
Do you know what to multiply 0,2 by to get 1? If you do, then multiply both sides by that number. In that way the lhs will be 1x or x and that is what you want.

Please change your user name, please.
 
Another way of looking at it. You are given the equation 0,2x= 7. You want an equation of the form x= something. That is, you want x alone. In the given equation it is not alone because it is multiplied by 0,2. You want to "undo" that. You "undo" multiplication by dividing! And, of course, in order to keep an equation true, whatever you do to one side you must do to the other. Dividing both sides of 0,2x= 7 gives x= 7/0,2= what?
 
You must log in or register to reply here.
Top