Question 401868
3-3(5-x)=0 
3 = 3(5-x)
1 = 5-x
-4 = -x
x = 4
--------  Or
3 - 15 + 3x = 0
-12 + 3x = 0
3x = 12
x = 4
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Do anything, get x on one side of the equal sign.