7 + ( x divided by 2) = 10
x/2 = 10 - 7
x/2 = 3
2 times x/2 = 3 times 2
*you multiply the x/2 by 2 so that the 2 cancels off and you are left with x and you have to make sure that whatever you do to one side of the equation you have to do to the other side)
x = 3 times 2
x = 6
hope this helps :)