89 × (б + 13) = 7120

Question

89 × (б + 13) = 7120

Answer 1

89×(б+13)=7120
б+13=7120/89
б+13=80
б=67

Answer 2

89*(b+13)=7120;
b+13=7120:89;
b+13=80;
b=80-13;
b=67