[tex]4x - 20 = 60[/tex]
[tex]4x = 60 + 20[/tex]
[tex]4x = 80[/tex]
[tex]x = \frac{80}{4} [/tex]
[tex]x = 20[/tex]
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[tex]4x - 20 = 60[/tex]
[tex]4x = 60 + 20[/tex]
[tex]4x = 80[/tex]
[tex]x = \frac{80}{4} [/tex]
[tex]x = 20[/tex]