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x=11
2.b=17+5
b=22
3.-4w=9-12
-4w=-3
w=-3+4
w=1
4.-6z-3=15
-6z=15+3
-6z=18
z=18/6
z=2
5.8d+4=7d-6
8d-7d=-6-4
d=-10