Clare was solving an equation, but when she checked her answer she saw her solution was incorrect. She knows she made a mistake, but she can’t find it. Where is Clare's mistake?

The Second Step.

Step-by-step explanation:

We are given the original equation:

In her first step, Clare distributed both sides:

There are two errors:

First, the product of 5 and 12 is 60 and not 72.

Second, on the right-hand side of the equation, the negative must be distributed to all terms. Hence, the correct result should be:

Instead of what she had obtained.

answer: b.

step-by-step explanation:

it is b. cause the equations are put in the right category