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x=13
2.
3t-11=2t+2
-2t -2t
t-11=2
+ 11 +11
t= 13
3.
y-45=54
+45 +45
y= 99
4. 5+2u=9-3u
-2u -2u
5+u= 9-u
-9 -9
u=0
5.
2z=z-6
-z -z
z=-6
6.
5v-3=4v+2
-5 -5
v-3=-1v+2
-3 -3
v=4v