A) 45 - 3x = 18x
+ 3x
45 = 21x
/21
2 1/7 = x
B) 3x + 2/5 = 31
-2/5
3x = 30 3/5
/3
x = 10 1/5
C) 2z - 3/5 - z -6/4 = 3
Combine like terms
z - 2 1/10 = 3
+ 2 1/10
z = 5 1/10
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