Question

Nisha did the work below to solve an equation.

Answer 1

Answer: step 3

I just took the test and got a 100%

Answer 2

Answer:

Step 3

Step-by-step explanation:

Here, the given expression,

$7b + 3.2b - 5 = 18.92$

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 )