x+9=6
x-(-15)=11
4x=16
-9x=-81
x-14=-6
x+24=16
x+10=24
4+x=36
12x=144
x-7=-21
x+10=18
-6x=48
x/2=7
x-21=-12
-x/8=-4
x/7=-2
-x/6=-2
x-6=-10
x-4=0
14x=-42
