Question

I will mark as brain list, please solve this problem with Step-by-step explanation please it's urgent please

Answer 1

Answer:

Step-by-step explanation:

By cross multiplication;

1+b+a+ab=1+b

a+ab=1+b-1-b

a+ab=0

By taking a common

a(1+b)=0

a=0÷1+b

a=0