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?

step 1

step 2

step 3

step 4

step 3

I just took the test and got a 100%

Step 3

Step-by-step explanation:

Here, the given expression,

Since, when we solve the given expression the steps of solution are as follows,

Step 1 : 7b + 3.2b - 5 = 18.92

Step 2 : 10.2b - 5 = 18.92      ( Combining like terms in left side )

Step 3 : 10.2b = 23.92           ( Adding 5 on both sides )

Step 4 : b = 4.6                       ( Dividing both sides by 10.2 )

Hence, by the above explanation it is clear that she made her mistake in step 3 ( she did not add 5 on right side )