Question

A student solved the equation: x+2(x+1)=17
𝑥
+
2
(
𝑥
+
1
)
=
17


Line 1: x+2x+1=17
𝑥
+
2
𝑥
+
1
=
17


Line 2: 3x+1=17
3
𝑥
+
1
=
17


Line 3: 3x=16
3
𝑥
=
16


Line 4: x=163
𝑥
=
16
3


(3 points)
Put responses in the correct response input area to answer the question. Select a response, navigate to the desired input area and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Identify the Property used to go from Line 2 to Line 3: Press enter key to drop response here.Response input area

Which line has a mistake? Press enter key to drop response here.Response input area

What should have been the correct answer for the equation? Press enter key to drop response here.Response input area

Select to move response to a response input area.Distributive PropertySelect to move response to

Answer 1

Identify the Property used to go from Line 2 to Line 3:
Subtraction Property of Equality (subtract 1 from both sides)

Which line has a mistake?
Line 1

What should have been the correct answer for the equation?
x = 5