itu no 3 tolong dijawab, pr buat besok!!

[tex] \frac{1}{4} x + \frac{1}{2} = 7 \\ \frac{1}{4} x + \frac{2}{4} = 7 \\ \frac{x + 2}{4} = 7 \\ x + 2 = 7 \times 4 \\ x + 2 = 28 \\ x = 28 - 2 \\ x = 26[/tex]
Semoga bisa membantu..