[tex] \frac{x}{3} + 30 = 100
[/tex]
[tex] \frac{x}{3} + 30 - 30 = 100 - 30 [/tex]
[tex] \frac{x}{3} = 70[/tex]
[tex] \frac{3x}{3} = 70 \times 3
[tex]x = 210[/tex]
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[tex] \frac{x}{3} + 30 = 100
[/tex]
[tex] \frac{x}{3} + 30 - 30 = 100 - 30 [/tex]
[tex] \frac{x}{3} = 70[/tex]
[tex] \frac{3x}{3} = 70 \times 3
[/tex]
[tex]x = 210[/tex]
dame corona