Answer:
[tex]b=-\frac{a}{d}+c[/tex]
Step-by-step explanation:
[tex]d(c-b)=a\\\\\frac{d(c-b)}{d}=\frac{a}{d}\\\\c-b=\frac{a}{d}\\\\c-b-c=\frac{a}{d}-c\\\\-b=\frac{a}{d}-c\\\\\frac{-b}{-1}=\frac{\frac{a}{d} }{-1}-\frac{c}{-1}\\\\b=-\frac{a}{d}+c[/tex]
