asked 6.3k views
2 votes
X x 18=9x ??? what number is missing

1 Answer

4 votes

x + 18 = 9x

collect like terms

18 = 9x - x

18 = 8x

Divide through by 8


\begin{gathered} (8x)/(8)\text{ = }(18)/(8) \\ x\text{ = }(18)/(8)\text{ = }(9)/(4) \end{gathered}

answered
User Jim Riordan
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