PDA

View Full Version : How do you do this equation?


Javi22
Jan 23, 2008, 02:42 PM
sumbody help me with this equation please
4x = 8 + 2x

Choux
Jan 23, 2008, 03:05 PM
x=4

jiten55
Jan 23, 2008, 05:16 PM
4x = 8 + 2x

Take 2x from the right side to the left side.

When a term change sides in an equation, it sign changes.

(Another way of looking at it: subtract 2x from both sides)

Hence

4x - 2x = 8

(4 -2)x = 8

2x = 8

Divide both sides by 2

x = 8/2

x = 4