#1**+10 **

Best Answer

2x+1=x

x=-1 this is NOT in the relevant domain so its no good

7-x=x

7=2x

x=3.5 not in given domain

10-2x=x

10=3x

x=10/3 YES

10-x=x

10=2x

x=5 YES

so there are 2 solutions

$$x=5\qquad or \qquad x=3\frac{1}{3}$$

pleasse ask if you do not understand :)

Melody
Jan 8, 2015

#2**+5 **

Very impressive, Melody...!!!!!

[I tried a * WAY* more complicated approach....it didn't work as well as this....LOL!!!....genius in simplicity.....!!! ]

CPhill
Jan 9, 2015