5x - 7=18
you add the seven to 18 and get 25
then you divide 25 by 5 to get x by itself and you will get 5
x=5
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That equation has no solution. There is no possible number that's equal to 18 more than itself.
5x * 18 = 201. /185x=1.111111112. /5x=0.2222222222
5x-19 = 16 5x = 16+19 5x = 35 x = 7
x=7
-5x+50 = 25 -5x = 25-50 -5x = -25 x = 5