X+2 =12
3

X-2 =6
-2

-5+x =-5
-3

-5-x=-2
-3

-4 =x
2

X+2x+1
2

-2x =x+10
3

X-3 =9+2x
-2

-6+3x =-4-x
-2


X2 12 3 X2 6 2 5x 5 3 5x2 3 4 X 2 X2x1 2 2x X10 3 X3 92x 2 63x 4x 2 class=