38+3x=89 is the proper way to write this equation.
Now to solve, first subtract 38 from both sides (38-38 and 89-38)
3x=51
Now divide both sides by 3( 3x/3 and 51/3)
x=17
the sum of 38 and three times a number is 89
(38+3n) = 89
subtract 38 from each side
3n = 51
divide by 3
n = 17
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