Question

Marlena solved the equation 2x + 5 = –10 – x. Her steps are shown below.

2x + 5 = –10 – x

3x + 5 = –10
3x = –15
x = –5
Use the drop-down menus to justify Marlena’s work in each step of the process.

Step 1:

Step 2:

Step 3:

Answer 1

Answer: step 1. addition property of equality

step 2. subtraction property of equality

step 3. division property of equality

Explanation: