ab+c=bc-a

make a the subject form

can anyone help with this.

ab+c=bc-a

Firstly, get all the 'a's on one side. To do this, add 'a' to both sides

ab+c+a=bc\cancel{-a+a}

Now, remove the 'c' from the left side. To do this, subtract c on both sides.

ab\cancel{+c-c}+a=bc-c

ab+a=bc-c

Factorise a on the left.

a(b+1)=bc-c

Divide both sides by (b+1);

\frac{a\cancel{(b+1)}}{\cancel{(b+1)}}=\frac{bc-c}{b+1}

a=\frac{bc-c}{b+1}

I hope it helped! :)