HEY
so first you have to add the like terms so move 10 to the other side and if move numbers over the equal sign it changes
So it will become
4x= 30 - 10
Then subtract
It’s 4x=20
Then u have to remove the 4 so u divide both sides by 4
4x/4 = 20/4
4/4 is 1 but u don’t put the 1 if there is a X so it’s just x
X=20/4
Now u divide the 20 with 4
It’s 5
So
X=5
Hope it helps!