Answer:
b = 0
Step-by-step explanation:
[tex]2b - 25 + 5b = 7 - 32 \\ 7b - 25 = 7 - 32 \\ 7b = 7 - 32 + 25 \\ 7b = - 25 + 25 \\ 7b = 0 \\ \frac{7b}{7} = \frac{0}{7} \\ b = 0[/tex]