X-2=104-X+2
X+X=104+2+2
2X=108
X=54
6X-59=10X-75
6X-10X=-75+59
-4X=-16
X=4
(x+10)+(x-15)=280-x
x+10+x-15=280-x
x+x+x=280-10+15
3x=285
x=95
X-2=104-X+2
X+X=104+2+2
2X=108
X=54
6X-59=10X-75
6X-10X=-75+59
-4X=-16
X=4
(x+10)+(x-15)=280-x
x+10+x-15=280-x
x+x+x=280-10+15
3x=285
x=95