A. 2/3x = 5
[tex] \frac{2}{3} x \: = \: 5[/tex]
[tex] \frac{3}{2} \: \times \: \frac{2}{3}x \: = \: \frac{3}{2} \: \times \: 5[/tex]
[tex]x \: = \: \frac{15}{2} \: = \: \boxed{ \bold{7.5}}[/tex]
B. 5/7x = -8
[tex] \frac{5}{7} x \: = \: - 8[/tex]
[tex] \frac{7}{5} \: \times \: \frac{5}{7}x \: = \: \frac{7}{5} \: \times \: (- 8)[/tex]
[tex]x \: = \: - \frac{56}{5} \: = \: \boxed{ \bold{ - 11.2}}[/tex]
Bonne chance!
