Answer:
[tex]a=\frac{x-c}{b}[/tex]
see the procedure
Step-by-step explanation:
we have
[tex]ab+c=x[/tex]
Solve for a
That means ---> isolate the variable a
Subtract c both sides
[tex]ab+c-c=x-c[/tex]
[tex]ab=x-c[/tex]
Divide by b both sides
[tex]\frac{ab}{b}=\frac{x-c}{b}[/tex]
[tex]a=\frac{x-c}{b}[/tex]