Answer:
[tex]a=(9-10c)/b[/tex]
Step-by-step explanation:
we have
[tex]ab+10c=9[/tex]
Solve for the variable a
That means----> isolate the variable a
Subtract 10c both sides
[tex]ab+10c-10c=9-10c[/tex]
[tex]ab=9-10c[/tex]
Divide by b both sides
[tex]ab/b=(9-10c)/b[/tex]
[tex]a=(9-10c)/b[/tex]
