12(x-5)=60
12=-3(x-5)
20=-10(x+8)
k/2=-6
2(x-1)=4
-2(2x+9)=2
r/5=10
20=-4(6x+1)
0=-7(5x-10)
5(5x-5)=50
x=1
r=50
x=3
x=-10
x=-1
x=5
k=-12
x=10
x=2
