can anyone help me if i dont get my grade up i wont get to go to my vollyball games

Answer:
x = 30
Step-by-step explanation:
[tex]\frac{3}{5}[/tex](30) + [tex]\frac{1}{3}[/tex](30) = 28
[tex]\frac{3}{5}[/tex](30) = 18
[tex]\frac{1}{3}[/tex](30) = 10
18 + 10 = 28
[tex] \frac{3}{8} x + \frac{1}{3} x = 28[/tex]
[tex] \frac{9}{24} x + \frac{8}{24}x = 28[/tex]
[tex] \frac{17}{24} x = 28[/tex]
[tex]x = 28 \div \frac{17}{24} [/tex]
[tex]x = 28 \times \frac{24}{17} [/tex]
[tex]x = \frac{672}{17} [/tex]
Answer : 672/17
The picture is the proof