Step-by-step explanation:
[tex] \frac{6}{5} = \frac{48}{3x + 7} \\ 6(3x + 7) = 5 \times 48 \\ 18x + 42 = 240 \\ 18x = 240 - 42 \\ 18x = 198 \\ \frac{18x}{18} = \frac{198}{18} \\ x = 11[/tex]
