Given the equation
[tex]7x-4x=-18[/tex]First, we simplify the left-hand side.
[tex]\begin{gathered} 7-4=3 \\ \text{Therefore:} \\ 7x-4x=3x \end{gathered}[/tex]The given equation then becomes:
[tex]3x=-18[/tex]To solve for x, divide both sides of the equation by 3.
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