Question

Nisha did the work below to solve an equation.
(Step 1) 7b + 3.2b - 5 = 18.92
(Step 2) 10.2b - 5 = 18.92
(Step 3) 5.2b = 18.92
(Step 4) b = 3.64.

In which step did Nisha make her first error?

a. Step 1
b. Step 2
c. Step 3
d. Step 4