Marlena solved the equation 2x 5 = –10 – x. her steps are shown below.
2x 5 = –10 – x
a. 3x 5 = –10
b. 3x = –15
c. x = –5
Use the drop-down menus to justify marlena’s work in each step of the process.
step 1: addition property of equality
step 2: division property of equality
step 3: addition property of equality