28x-10(x-2)+37=0
28x-10x+20+37=0
18x=-57
x=-57/18
-40x+100=-(32+x)+7
-40x+100=-32-x+7
-39x=-125
x=125/39
-5x+2(x+2)=-7x-10
-5x+2x+4=-7x-10
4x=-14
x=-14/4
-18x-(18+x)-2(x+6)+7=0
-18x-18-x-2x-12+7=0
-21x=23
x=-23/21
11x-(22x+100)=-2
11x-22x-100=-2
-11x=98
x=-98/11